Finding the Fourth Proportional to 1,674.34, 2,310.52 and 928.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,674.34 : 2,310.52 = 928.28 : x
2. Step 2: Convert to fraction form
   1,674.34/2,310.52 = 928.28/x
3. Step 3: Cross multiply
   1,674.34x = 2,310.52 × 928.28
4. Step 4: Simplify right side
   1,674.34x = 2,144,809.51
5. Step 5: Solve for x
   x = 2,144,809.51/1,674.34
6. Step 6: Final answer
   x = 1,280.99