Finding the Fourth Proportional to 1,591.53, 2,196.18 and 928.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,591.53 : 2,196.18 = 928.46 : x
2. Step 2: Convert to fraction form
   1,591.53/2,196.18 = 928.46/x
3. Step 3: Cross multiply
   1,591.53x = 2,196.18 × 928.46
4. Step 4: Simplify right side
   1,591.53x = 2,039,054.30
5. Step 5: Solve for x
   x = 2,039,054.30/1,591.53
6. Step 6: Final answer
   x = 1,281.19