Finding the Fourth Proportional to 2,258.61, 3,116.52 and 2,061.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.61 : 3,116.52 = 2,061.78 : x
2. Step 2: Convert to fraction form
   2,258.61/3,116.52 = 2,061.78/x
3. Step 3: Cross multiply
   2,258.61x = 3,116.52 × 2,061.78
4. Step 4: Simplify right side
   2,258.61x = 6,425,578.61
5. Step 5: Solve for x
   x = 6,425,578.61/2,258.61
6. Step 6: Final answer
   x = 2,844.93