Finding the Fourth Proportional to 1,152.60, 1,589.18 and 901.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.60 : 1,589.18 = 901.72 : x
2. Step 2: Convert to fraction form
   1,152.60/1,589.18 = 901.72/x
3. Step 3: Cross multiply
   1,152.60x = 1,589.18 × 901.72
4. Step 4: Simplify right side
   1,152.60x = 1,432,995.39
5. Step 5: Solve for x
   x = 1,432,995.39/1,152.60
6. Step 6: Final answer
   x = 1,243.27