Finding the Fourth Proportional to 1,417.15, 2,111.48 and 1,337.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,417.15 : 2,111.48 = 1,337.57 : x
2. Step 2: Convert to fraction form
   1,417.15/2,111.48 = 1,337.57/x
3. Step 3: Cross multiply
   1,417.15x = 2,111.48 × 1,337.57
4. Step 4: Simplify right side
   1,417.15x = 2,824,247.13
5. Step 5: Solve for x
   x = 2,824,247.13/1,417.15
6. Step 6: Final answer
   x = 1,992.91