Finding the Fourth Proportional to 1,451.94, 2,002.20 and 1,242.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,451.94 : 2,002.20 = 1,242.81 : x
2. Step 2: Convert to fraction form
   1,451.94/2,002.20 = 1,242.81/x
3. Step 3: Cross multiply
   1,451.94x = 2,002.20 × 1,242.81
4. Step 4: Simplify right side
   1,451.94x = 2,488,354.18
5. Step 5: Solve for x
   x = 2,488,354.18/1,451.94
6. Step 6: Final answer
   x = 1,713.81