Finding the Fourth Proportional to 2,253.63, 3,109.76 and 1,258.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,253.63 : 3,109.76 = 1,258.88 : x
2. Step 2: Convert to fraction form
   2,253.63/3,109.76 = 1,258.88/x
3. Step 3: Cross multiply
   2,253.63x = 3,109.76 × 1,258.88
4. Step 4: Simplify right side
   2,253.63x = 3,914,792.83
5. Step 5: Solve for x
   x = 3,914,792.83/2,253.63
6. Step 6: Final answer
   x = 1,737.11