Finding the Fourth Proportional to 1,018,996.52, 1,403,784.78 and 712,499.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018,996.52 : 1,403,784.78 = 712,499.42 : x
2. Step 2: Convert to fraction form
   1,018,996.52/1,403,784.78 = 712,499.42/x
3. Step 3: Cross multiply
   1,018,996.52x = 1,403,784.78 × 712,499.42
4. Step 4: Simplify right side
   1,018,996.52x = 1,000,195,841,554.83
5. Step 5: Solve for x
   x = 1,000,195,841,554.83/1,018,996.52
6. Step 6: Final answer
   x = 981,549.81