Finding the Fourth Proportional to 1,288.15, 1,933.08 and 740.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,288.15 : 1,933.08 = 740.59 : x
2. Step 2: Convert to fraction form
   1,288.15/1,933.08 = 740.59/x
3. Step 3: Cross multiply
   1,288.15x = 1,933.08 × 740.59
4. Step 4: Simplify right side
   1,288.15x = 1,431,619.72
5. Step 5: Solve for x
   x = 1,431,619.72/1,288.15
6. Step 6: Final answer
   x = 1,111.38