Finding the Fourth Proportional to 964,405.69, 1,443,770.72 and 643,762.24

Step by Step Solution

1. Step 1: Write the proportion equation
   964,405.69 : 1,443,770.72 = 643,762.24 : x
2. Step 2: Convert to fraction form
   964,405.69/1,443,770.72 = 643,762.24/x
3. Step 3: Cross multiply
   964,405.69x = 1,443,770.72 × 643,762.24
4. Step 4: Simplify right side
   964,405.69x = 929,445,065,925.38
5. Step 5: Solve for x
   x = 929,445,065,925.38/964,405.69
6. Step 6: Final answer
   x = 963,749.05