Finding the Fourth Proportional to 1,513,665.72, 2,088,908.46 and 869,200.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513,665.72 : 2,088,908.46 = 869,200.56 : x
2. Step 2: Convert to fraction form
   1,513,665.72/2,088,908.46 = 869,200.56/x
3. Step 3: Cross multiply
   1,513,665.72x = 2,088,908.46 × 869,200.56
4. Step 4: Simplify right side
   1,513,665.72x = 1,815,680,403,220.74
5. Step 5: Solve for x
   x = 1,815,680,403,220.74/1,513,665.72
6. Step 6: Final answer
   x = 1,199,525.35