Finding the Fourth Proportional to 2,263.16, 3,123.30 and 1,268.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,263.16 : 3,123.30 = 1,268.40 : x
2. Step 2: Convert to fraction form
   2,263.16/3,123.30 = 1,268.40/x
3. Step 3: Cross multiply
   2,263.16x = 3,123.30 × 1,268.40
4. Step 4: Simplify right side
   2,263.16x = 3,961,593.72
5. Step 5: Solve for x
   x = 3,961,593.72/2,263.16
6. Step 6: Final answer
   x = 1,750.47