Finding the Fourth Proportional to 1,674.15, 2,310.34 and 928.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,674.15 : 2,310.34 = 928.06 : x
2. Step 2: Convert to fraction form
   1,674.15/2,310.34 = 928.06/x
3. Step 3: Cross multiply
   1,674.15x = 2,310.34 × 928.06
4. Step 4: Simplify right side
   1,674.15x = 2,144,140.78
5. Step 5: Solve for x
   x = 2,144,140.78/1,674.15
6. Step 6: Final answer
   x = 1,280.73