Finding the Fourth Proportional to 1,146.24, 1,720.71 and 900.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.24 : 1,720.71 = 900.18 : x
2. Step 2: Convert to fraction form
   1,146.24/1,720.71 = 900.18/x
3. Step 3: Cross multiply
   1,146.24x = 1,720.71 × 900.18
4. Step 4: Simplify right side
   1,146.24x = 1,548,948.73
5. Step 5: Solve for x
   x = 1,548,948.73/1,146.24
6. Step 6: Final answer
   x = 1,351.33