Finding the Fourth Proportional to 1,124,870.32, 1,552,389.60 and 641,528.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,124,870.32 : 1,552,389.60 = 641,528.74 : x
2. Step 2: Convert to fraction form
   1,124,870.32/1,552,389.60 = 641,528.74/x
3. Step 3: Cross multiply
   1,124,870.32x = 1,552,389.60 × 641,528.74
4. Step 4: Simplify right side
   1,124,870.32x = 995,902,544,077.10
5. Step 5: Solve for x
   x = 995,902,544,077.10/1,124,870.32
6. Step 6: Final answer
   x = 885,348.76