Finding the Fourth Proportional to 2,655.52, 3,978.58 and 1,613.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,655.52 : 3,978.58 = 1,613.39 : x
2. Step 2: Convert to fraction form
   2,655.52/3,978.58 = 1,613.39/x
3. Step 3: Cross multiply
   2,655.52x = 3,978.58 × 1,613.39
4. Step 4: Simplify right side
   2,655.52x = 6,419,001.19
5. Step 5: Solve for x
   x = 6,419,001.19/2,655.52
6. Step 6: Final answer
   x = 2,417.23