Finding the Fourth Proportional to 2,100.31, 2,898.31 and 1,168.75

Step by Step Solution

1. Step 1: Write the proportion equation
   2,100.31 : 2,898.31 = 1,168.75 : x
2. Step 2: Convert to fraction form
   2,100.31/2,898.31 = 1,168.75/x
3. Step 3: Cross multiply
   2,100.31x = 2,898.31 × 1,168.75
4. Step 4: Simplify right side
   2,100.31x = 3,387,399.81
5. Step 5: Solve for x
   x = 3,387,399.81/2,100.31
6. Step 6: Final answer
   x = 1,612.81