Finding the Fourth Proportional to 1,294,585.43, 1,786,490.71 and 721,613.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,294,585.43 : 1,786,490.71 = 721,613.30 : x
2. Step 2: Convert to fraction form
   1,294,585.43/1,786,490.71 = 721,613.30/x
3. Step 3: Cross multiply
   1,294,585.43x = 1,786,490.71 × 721,613.30
4. Step 4: Simplify right side
   1,294,585.43x = 1,289,155,445,925.96
5. Step 5: Solve for x
   x = 1,289,155,445,925.96/1,294,585.43
6. Step 6: Final answer
   x = 995,805.62