Finding the Fourth Proportional to 2,071.50, 3,107.34 and 610.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.50 : 3,107.34 = 610.77 : x
2. Step 2: Convert to fraction form
   2,071.50/3,107.34 = 610.77/x
3. Step 3: Cross multiply
   2,071.50x = 3,107.34 × 610.77
4. Step 4: Simplify right side
   2,071.50x = 1,897,870.05
5. Step 5: Solve for x
   x = 1,897,870.05/2,071.50
6. Step 6: Final answer
   x = 916.18