Finding the Fourth Proportional to 1,674.18, 2,310.15 and 928.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,674.18 : 2,310.15 = 928.03 : x
2. Step 2: Convert to fraction form
   1,674.18/2,310.15 = 928.03/x
3. Step 3: Cross multiply
   1,674.18x = 2,310.15 × 928.03
4. Step 4: Simplify right side
   1,674.18x = 2,143,883.86
5. Step 5: Solve for x
   x = 2,143,883.86/1,674.18
6. Step 6: Final answer
   x = 1,280.56