Finding the Fourth Proportional to 1,016,573.10, 1,523,110.05 and 661,404.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,016,573.10 : 1,523,110.05 = 661,404.30 : x
2. Step 2: Convert to fraction form
   1,016,573.10/1,523,110.05 = 661,404.30/x
3. Step 3: Cross multiply
   1,016,573.10x = 1,523,110.05 × 661,404.30
4. Step 4: Simplify right side
   1,016,573.10x = 1,007,391,536,443.22
5. Step 5: Solve for x
   x = 1,007,391,536,443.22/1,016,573.10
6. Step 6: Final answer
   x = 990,968.12