Finding the Fourth Proportional to 1,642.30, 2,460.69 and 1,154.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,642.30 : 2,460.69 = 1,154.47 : x
2. Step 2: Convert to fraction form
   1,642.30/2,460.69 = 1,154.47/x
3. Step 3: Cross multiply
   1,642.30x = 2,460.69 × 1,154.47
4. Step 4: Simplify right side
   1,642.30x = 2,840,792.78
5. Step 5: Solve for x
   x = 2,840,792.78/1,642.30
6. Step 6: Final answer
   x = 1,729.76