Finding the Fourth Proportional to 1,117,854.72, 1,542,436.38 and 634,440.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,117,854.72 : 1,542,436.38 = 634,440.24 : x
2. Step 2: Convert to fraction form
   1,117,854.72/1,542,436.38 = 634,440.24/x
3. Step 3: Cross multiply
   1,117,854.72x = 1,542,436.38 × 634,440.24
4. Step 4: Simplify right side
   1,117,854.72x = 978,583,707,111.93
5. Step 5: Solve for x
   x = 978,583,707,111.93/1,117,854.72
6. Step 6: Final answer
   x = 875,412.24