Finding the Fourth Proportional to 1,143,014.72, 1,573,761.12 and 870,206.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,143,014.72 : 1,573,761.12 = 870,206.72 : x
2. Step 2: Convert to fraction form
   1,143,014.72/1,573,761.12 = 870,206.72/x
3. Step 3: Cross multiply
   1,143,014.72x = 1,573,761.12 × 870,206.72
4. Step 4: Simplify right side
   1,143,014.72x = 1,369,497,502,298.73
5. Step 5: Solve for x
   x = 1,369,497,502,298.73/1,143,014.72
6. Step 6: Final answer
   x = 1,198,145.11