Finding the Fourth Proportional to 2,309,093.48, 3,186,553.62 and 1,290,498.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,309,093.48 : 3,186,553.62 = 1,290,498.20 : x
2. Step 2: Convert to fraction form
   2,309,093.48/3,186,553.62 = 1,290,498.20/x
3. Step 3: Cross multiply
   2,309,093.48x = 3,186,553.62 × 1,290,498.20
4. Step 4: Simplify right side
   2,309,093.48x = 4,112,241,710,813.48
5. Step 5: Solve for x
   x = 4,112,241,710,813.48/2,309,093.48
6. Step 6: Final answer
   x = 1,780,890.10