Finding the Fourth Proportional to 2,071.52, 3,107.87 and 610.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.52 : 3,107.87 = 610.67 : x
2. Step 2: Convert to fraction form
   2,071.52/3,107.87 = 610.67/x
3. Step 3: Cross multiply
   2,071.52x = 3,107.87 × 610.67
4. Step 4: Simplify right side
   2,071.52x = 1,897,892.27
5. Step 5: Solve for x
   x = 1,897,892.27/2,071.52
6. Step 6: Final answer
   x = 916.19