Finding the Fourth Proportional to 1,174.82, 1,755.83 and 928.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,174.82 : 1,755.83 = 928.78 : x
2. Step 2: Convert to fraction form
   1,174.82/1,755.83 = 928.78/x
3. Step 3: Cross multiply
   1,174.82x = 1,755.83 × 928.78
4. Step 4: Simplify right side
   1,174.82x = 1,630,777.72
5. Step 5: Solve for x
   x = 1,630,777.72/1,174.82
6. Step 6: Final answer
   x = 1,388.11