Finding the Fourth Proportional to 2,610.30, 3,915.18 and 1,071.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,610.30 : 3,915.18 = 1,071.30 : x
2. Step 2: Convert to fraction form
   2,610.30/3,915.18 = 1,071.30/x
3. Step 3: Cross multiply
   2,610.30x = 3,915.18 × 1,071.30
4. Step 4: Simplify right side
   2,610.30x = 4,194,332.33
5. Step 5: Solve for x
   x = 4,194,332.33/2,610.30
6. Step 6: Final answer
   x = 1,606.84