Finding the Fourth Proportional to 2,071.24, 3,105.79 and 610.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.24 : 3,105.79 = 610.20 : x
2. Step 2: Convert to fraction form
   2,071.24/3,105.79 = 610.20/x
3. Step 3: Cross multiply
   2,071.24x = 3,105.79 × 610.20
4. Step 4: Simplify right side
   2,071.24x = 1,895,151.53
5. Step 5: Solve for x
   x = 1,895,151.53/2,071.24
6. Step 6: Final answer
   x = 914.98