Finding the Fourth Proportional to 2,610.56, 3,915.68 and 1,071.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.56 : 3,915.68 = 1,071.52 : x
2. Step 2: Convert to fraction form
   2,610.56/3,915.68 = 1,071.52/x
3. Step 3: Cross multiply
   2,610.56x = 3,915.68 × 1,071.52
4. Step 4: Simplify right side
   2,610.56x = 4,195,729.43
5. Step 5: Solve for x
   x = 4,195,729.43/2,610.56
6. Step 6: Final answer
   x = 1,607.21