Finding the Fourth Proportional to 1,426.16, 1,967.28 and 901.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.16 : 1,967.28 = 901.28 : x
2. Step 2: Convert to fraction form
   1,426.16/1,967.28 = 901.28/x
3. Step 3: Cross multiply
   1,426.16x = 1,967.28 × 901.28
4. Step 4: Simplify right side
   1,426.16x = 1,773,070.12
5. Step 5: Solve for x
   x = 1,773,070.12/1,426.16
6. Step 6: Final answer
   x = 1,243.25