Finding the Fourth Proportional to 1,066.67, 1,592.34 and 928.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.67 : 1,592.34 = 928.25 : x
2. Step 2: Convert to fraction form
   1,066.67/1,592.34 = 928.25/x
3. Step 3: Cross multiply
   1,066.67x = 1,592.34 × 928.25
4. Step 4: Simplify right side
   1,066.67x = 1,478,089.61
5. Step 5: Solve for x
   x = 1,478,089.61/1,066.67
6. Step 6: Final answer
   x = 1,385.70