Finding the Fourth Proportional to 1,260,355,784.39, 1,739,443,498.83 and 717,328,757.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,260,355,784.39 : 1,739,443,498.83 = 717,328,757.88 : x
2. Step 2: Convert to fraction form
   1,260,355,784.39/1,739,443,498.83 = 717,328,757.88/x
3. Step 3: Cross multiply
   1,260,355,784.39x = 1,739,443,498.83 × 717,328,757.88
4. Step 4: Simplify right side
   1,260,355,784.39x = 1,247,752,844,409,467,904
5. Step 5: Solve for x
   x = 1,247,752,844,409,467,904/1,260,355,784.39
6. Step 6: Final answer
   x = 990,000,490.23