Finding the Fourth Proportional to 2,132.01, 2,939.31 and 1,913.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,132.01 : 2,939.31 = 1,913.31 : x
2. Step 2: Convert to fraction form
   2,132.01/2,939.31 = 1,913.31/x
3. Step 3: Cross multiply
   2,132.01x = 2,939.31 × 1,913.31
4. Step 4: Simplify right side
   2,132.01x = 5,623,811.22
5. Step 5: Solve for x
   x = 5,623,811.22/2,132.01
6. Step 6: Final answer
   x = 2,637.80