Finding the Fourth Proportional to 2,071.83, 3,107.46 and 611.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.83 : 3,107.46 = 611.13 : x
2. Step 2: Convert to fraction form
   2,071.83/3,107.46 = 611.13/x
3. Step 3: Cross multiply
   2,071.83x = 3,107.46 × 611.13
4. Step 4: Simplify right side
   2,071.83x = 1,899,062.03
5. Step 5: Solve for x
   x = 1,899,062.03/2,071.83
6. Step 6: Final answer
   x = 916.61