Finding the Fourth Proportional to 1,272,023.88, 1,755,372.78 and 699,051.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,272,023.88 : 1,755,372.78 = 699,051.72 : x
2. Step 2: Convert to fraction form
   1,272,023.88/1,755,372.78 = 699,051.72/x
3. Step 3: Cross multiply
   1,272,023.88x = 1,755,372.78 × 699,051.72
4. Step 4: Simplify right side
   1,272,023.88x = 1,227,096,361,100.18
5. Step 5: Solve for x
   x = 1,227,096,361,100.18/1,272,023.88
6. Step 6: Final answer
   x = 964,680.29