Finding the Fourth Proportional to 2,160.98, 3,238.89 and 1,237.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,160.98 : 3,238.89 = 1,237.17 : x
2. Step 2: Convert to fraction form
   2,160.98/3,238.89 = 1,237.17/x
3. Step 3: Cross multiply
   2,160.98x = 3,238.89 × 1,237.17
4. Step 4: Simplify right side
   2,160.98x = 4,007,065.05
5. Step 5: Solve for x
   x = 4,007,065.05/2,160.98
6. Step 6: Final answer
   x = 1,854.28