Finding the Fourth Proportional to 2,133.01, 2,943.98 and 1,387.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,133.01 : 2,943.98 = 1,387.61 : x
2. Step 2: Convert to fraction form
   2,133.01/2,943.98 = 1,387.61/x
3. Step 3: Cross multiply
   2,133.01x = 2,943.98 × 1,387.61
4. Step 4: Simplify right side
   2,133.01x = 4,085,089.15
5. Step 5: Solve for x
   x = 4,085,089.15/2,133.01
6. Step 6: Final answer
   x = 1,915.18