Finding the Fourth Proportional to 2,071.94, 3,108.06 and 611.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.94 : 3,108.06 = 611.16 : x
2. Step 2: Convert to fraction form
   2,071.94/3,108.06 = 611.16/x
3. Step 3: Cross multiply
   2,071.94x = 3,108.06 × 611.16
4. Step 4: Simplify right side
   2,071.94x = 1,899,506.41
5. Step 5: Solve for x
   x = 1,899,506.41/2,071.94
6. Step 6: Final answer
   x = 916.78