Finding the Fourth Proportional to 2,308,979.88, 3,186,533.72 and 1,290,465.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308,979.88 : 3,186,533.72 = 1,290,465.96 : x
2. Step 2: Convert to fraction form
   2,308,979.88/3,186,533.72 = 1,290,465.96/x
3. Step 3: Cross multiply
   2,308,979.88x = 3,186,533.72 × 1,290,465.96
4. Step 4: Simplify right side
   2,308,979.88x = 4,112,113,296,052.17
5. Step 5: Solve for x
   x = 4,112,113,296,052.17/2,308,979.88
6. Step 6: Final answer
   x = 1,780,922.10