Finding the Fourth Proportional to 1,482.30, 2,226.89 and 928.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,482.30 : 2,226.89 = 928.72 : x
2. Step 2: Convert to fraction form
   1,482.30/2,226.89 = 928.72/x
3. Step 3: Cross multiply
   1,482.30x = 2,226.89 × 928.72
4. Step 4: Simplify right side
   1,482.30x = 2,068,149.86
5. Step 5: Solve for x
   x = 2,068,149.86/1,482.30
6. Step 6: Final answer
   x = 1,395.23