Finding the Fourth Proportional to 1,425.78, 1,967.16 and 901.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,425.78 : 1,967.16 = 901.71 : x
2. Step 2: Convert to fraction form
   1,425.78/1,967.16 = 901.71/x
3. Step 3: Cross multiply
   1,425.78x = 1,967.16 × 901.71
4. Step 4: Simplify right side
   1,425.78x = 1,773,807.84
5. Step 5: Solve for x
   x = 1,773,807.84/1,425.78
6. Step 6: Final answer
   x = 1,244.10