Finding the Fourth Proportional to 989,812.72, 1,365,945.30 and 537,103.72

Step by Step Solution

1. Step 1: Write the proportion equation
   989,812.72 : 1,365,945.30 = 537,103.72 : x
2. Step 2: Convert to fraction form
   989,812.72/1,365,945.30 = 537,103.72/x
3. Step 3: Cross multiply
   989,812.72x = 1,365,945.30 × 537,103.72
4. Step 4: Simplify right side
   989,812.72x = 733,654,301,946.52
5. Step 5: Solve for x
   x = 733,654,301,946.52/989,812.72
6. Step 6: Final answer
   x = 741,205.17