Finding the Fourth Proportional to 1,015,620.72, 1,400,828.76 and 671,057.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015,620.72 : 1,400,828.76 = 671,057.52 : x
2. Step 2: Convert to fraction form
   1,015,620.72/1,400,828.76 = 671,057.52/x
3. Step 3: Cross multiply
   1,015,620.72x = 1,400,828.76 × 671,057.52
4. Step 4: Simplify right side
   1,015,620.72x = 940,036,673,630.28
5. Step 5: Solve for x
   x = 940,036,673,630.28/1,015,620.72
6. Step 6: Final answer
   x = 925,578.47