Finding the Fourth Proportional to 1,617.42, 2,426.12 and 1,155.41

Step by Step Solution

1. Step 1: Write the proportion equation
   1,617.42 : 2,426.12 = 1,155.41 : x
2. Step 2: Convert to fraction form
   1,617.42/2,426.12 = 1,155.41/x
3. Step 3: Cross multiply
   1,617.42x = 2,426.12 × 1,155.41
4. Step 4: Simplify right side
   1,617.42x = 2,803,145.40
5. Step 5: Solve for x
   x = 2,803,145.40/1,617.42
6. Step 6: Final answer
   x = 1,733.10