Finding the Fourth Proportional to 1,490.79, 2,057.72 and 901.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,490.79 : 2,057.72 = 901.37 : x
2. Step 2: Convert to fraction form
   1,490.79/2,057.72 = 901.37/x
3. Step 3: Cross multiply
   1,490.79x = 2,057.72 × 901.37
4. Step 4: Simplify right side
   1,490.79x = 1,854,767.08
5. Step 5: Solve for x
   x = 1,854,767.08/1,490.79
6. Step 6: Final answer
   x = 1,244.15