Finding the Fourth Proportional to 2,649.39, 3,973.55 and 1,332.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,649.39 : 3,973.55 = 1,332.78 : x
2. Step 2: Convert to fraction form
   2,649.39/3,973.55 = 1,332.78/x
3. Step 3: Cross multiply
   2,649.39x = 3,973.55 × 1,332.78
4. Step 4: Simplify right side
   2,649.39x = 5,295,861.31
5. Step 5: Solve for x
   x = 5,295,861.31/2,649.39
6. Step 6: Final answer
   x = 1,998.90