Finding the Fourth Proportional to 1,490.88, 2,057.12 and 901.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,490.88 : 2,057.12 = 901.46 : x
2. Step 2: Convert to fraction form
   1,490.88/2,057.12 = 901.46/x
3. Step 3: Cross multiply
   1,490.88x = 2,057.12 × 901.46
4. Step 4: Simplify right side
   1,490.88x = 1,854,396.60
5. Step 5: Solve for x
   x = 1,854,396.60/1,490.88
6. Step 6: Final answer
   x = 1,243.83