Finding the Fourth Proportional to 1,490.27, 2,056.61 and 900.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,490.27 : 2,056.61 = 900.46 : x
2. Step 2: Convert to fraction form
   1,490.27/2,056.61 = 900.46/x
3. Step 3: Cross multiply
   1,490.27x = 2,056.61 × 900.46
4. Step 4: Simplify right side
   1,490.27x = 1,851,895.04
5. Step 5: Solve for x
   x = 1,851,895.04/1,490.27
6. Step 6: Final answer
   x = 1,242.66