Finding the Fourth Proportional to 1,591.38, 2,196.15 and 928.26

Step by Step Solution

1. Step 1: Write the proportion equation
   1,591.38 : 2,196.15 = 928.26 : x
2. Step 2: Convert to fraction form
   1,591.38/2,196.15 = 928.26/x
3. Step 3: Cross multiply
   1,591.38x = 2,196.15 × 928.26
4. Step 4: Simplify right side
   1,591.38x = 2,038,598.20
5. Step 5: Solve for x
   x = 2,038,598.20/1,591.38
6. Step 6: Final answer
   x = 1,281.03