Finding the Fourth Proportional to 2,150.50, 3,225.87 and 611.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.50 : 3,225.87 = 611.62 : x
2. Step 2: Convert to fraction form
   2,150.50/3,225.87 = 611.62/x
3. Step 3: Cross multiply
   2,150.50x = 3,225.87 × 611.62
4. Step 4: Simplify right side
   2,150.50x = 1,973,006.61
5. Step 5: Solve for x
   x = 1,973,006.61/2,150.50
6. Step 6: Final answer
   x = 917.46