Finding the Fourth Proportional to 2,610.08, 3,915.08 and 1,311.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.08 : 3,915.08 = 1,311.52 : x
2. Step 2: Convert to fraction form
   2,610.08/3,915.08 = 1,311.52/x
3. Step 3: Cross multiply
   2,610.08x = 3,915.08 × 1,311.52
4. Step 4: Simplify right side
   2,610.08x = 5,134,705.72
5. Step 5: Solve for x
   x = 5,134,705.72/2,610.08
6. Step 6: Final answer
   x = 1,967.26