Finding the Fourth Proportional to 1,140,221.92, 1,573,440.72 and 630,898.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,140,221.92 : 1,573,440.72 = 630,898.72 : x
2. Step 2: Convert to fraction form
   1,140,221.92/1,573,440.72 = 630,898.72/x
3. Step 3: Cross multiply
   1,140,221.92x = 1,573,440.72 × 630,898.72
4. Step 4: Simplify right side
   1,140,221.92x = 992,681,736,243.88
5. Step 5: Solve for x
   x = 992,681,736,243.88/1,140,221.92
6. Step 6: Final answer
   x = 870,603.98