Finding the Fourth Proportional to 1,131,221.98, 1,561,422.88 and 648,108.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131,221.98 : 1,561,422.88 = 648,108.82 : x
2. Step 2: Convert to fraction form
   1,131,221.98/1,561,422.88 = 648,108.82/x
3. Step 3: Cross multiply
   1,131,221.98x = 1,561,422.88 × 648,108.82
4. Step 4: Simplify right side
   1,131,221.98x = 1,011,971,940,277.80
5. Step 5: Solve for x
   x = 1,011,971,940,277.80/1,131,221.98
6. Step 6: Final answer
   x = 894,582.99