Finding the Fourth Proportional to 1,272,061.84, 1,755,491.52 and 699,145.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,272,061.84 : 1,755,491.52 = 699,145.60 : x
2. Step 2: Convert to fraction form
   1,272,061.84/1,755,491.52 = 699,145.60/x
3. Step 3: Cross multiply
   1,272,061.84x = 1,755,491.52 × 699,145.60
4. Step 4: Simplify right side
   1,272,061.84x = 1,227,344,172,045.31
5. Step 5: Solve for x
   x = 1,227,344,172,045.31/1,272,061.84
6. Step 6: Final answer
   x = 964,846.31