Finding the Fourth Proportional to 1,422.74, 2,131.71 and 901.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,422.74 : 2,131.71 = 901.46 : x
2. Step 2: Convert to fraction form
   1,422.74/2,131.71 = 901.46/x
3. Step 3: Cross multiply
   1,422.74x = 2,131.71 × 901.46
4. Step 4: Simplify right side
   1,422.74x = 1,921,651.30
5. Step 5: Solve for x
   x = 1,921,651.30/1,422.74
6. Step 6: Final answer
   x = 1,350.67