Finding the Fourth Proportional to 1,387.59, 2,076.71 and 1,168.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,387.59 : 2,076.71 = 1,168.49 : x
2. Step 2: Convert to fraction form
   1,387.59/2,076.71 = 1,168.49/x
3. Step 3: Cross multiply
   1,387.59x = 2,076.71 × 1,168.49
4. Step 4: Simplify right side
   1,387.59x = 2,426,598.64
5. Step 5: Solve for x
   x = 2,426,598.64/1,387.59
6. Step 6: Final answer
   x = 1,748.79