Finding the Fourth Proportional to 1,393.36, 2,088.89 and 734.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.36 : 2,088.89 = 734.87 : x
2. Step 2: Convert to fraction form
   1,393.36/2,088.89 = 734.87/x
3. Step 3: Cross multiply
   1,393.36x = 2,088.89 × 734.87
4. Step 4: Simplify right side
   1,393.36x = 1,535,062.59
5. Step 5: Solve for x
   x = 1,535,062.59/1,393.36
6. Step 6: Final answer
   x = 1,101.70