Finding the Fourth Proportional to 1,490.20, 2,055.18 and 900.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,490.20 : 2,055.18 = 900.52 : x
2. Step 2: Convert to fraction form
   1,490.20/2,055.18 = 900.52/x
3. Step 3: Cross multiply
   1,490.20x = 2,055.18 × 900.52
4. Step 4: Simplify right side
   1,490.20x = 1,850,730.69
5. Step 5: Solve for x
   x = 1,850,730.69/1,490.20
6. Step 6: Final answer
   x = 1,241.93