Finding the Fourth Proportional to 2,113.88, 2,917.15 and 1,182.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,113.88 : 2,917.15 = 1,182.38 : x
2. Step 2: Convert to fraction form
   2,113.88/2,917.15 = 1,182.38/x
3. Step 3: Cross multiply
   2,113.88x = 2,917.15 × 1,182.38
4. Step 4: Simplify right side
   2,113.88x = 3,449,162.28
5. Step 5: Solve for x
   x = 3,449,162.28/2,113.88
6. Step 6: Final answer
   x = 1,631.68