Finding the Fourth Proportional to 1,942.31, 2,908.15 and 1,357.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,942.31 : 2,908.15 = 1,357.90 : x
2. Step 2: Convert to fraction form
   1,942.31/2,908.15 = 1,357.90/x
3. Step 3: Cross multiply
   1,942.31x = 2,908.15 × 1,357.90
4. Step 4: Simplify right side
   1,942.31x = 3,948,973.86
5. Step 5: Solve for x
   x = 3,948,973.86/1,942.31
6. Step 6: Final answer
   x = 2,033.13