Finding the Fourth Proportional to 2,117.62, 2,921.33 and 1,371.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,117.62 : 2,921.33 = 1,371.82 : x
2. Step 2: Convert to fraction form
   2,117.62/2,921.33 = 1,371.82/x
3. Step 3: Cross multiply
   2,117.62x = 2,921.33 × 1,371.82
4. Step 4: Simplify right side
   2,117.62x = 4,007,538.92
5. Step 5: Solve for x
   x = 4,007,538.92/2,117.62
6. Step 6: Final answer
   x = 1,892.47