Finding the Fourth Proportional to 2,258.88, 3,116.64 and 1,374.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,258.88 : 3,116.64 = 1,374.72 : x
2. Step 2: Convert to fraction form
   2,258.88/3,116.64 = 1,374.72/x
3. Step 3: Cross multiply
   2,258.88x = 3,116.64 × 1,374.72
4. Step 4: Simplify right side
   2,258.88x = 4,284,507.34
5. Step 5: Solve for x
   x = 4,284,507.34/2,258.88
6. Step 6: Final answer
   x = 1,896.74