Finding the Fourth Proportional to 1,183.55, 1,773.50 and 874.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,183.55 : 1,773.50 = 874.94 : x
2. Step 2: Convert to fraction form
   1,183.55/1,773.50 = 874.94/x
3. Step 3: Cross multiply
   1,183.55x = 1,773.50 × 874.94
4. Step 4: Simplify right side
   1,183.55x = 1,551,692.85
5. Step 5: Solve for x
   x = 1,551,692.85/1,183.55
6. Step 6: Final answer
   x = 1,311.06