Finding the Fourth Proportional to 1,082.75, 1,630.93 and 985.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,082.75 : 1,630.93 = 985.86 : x
2. Step 2: Convert to fraction form
   1,082.75/1,630.93 = 985.86/x
3. Step 3: Cross multiply
   1,082.75x = 1,630.93 × 985.86
4. Step 4: Simplify right side
   1,082.75x = 1,607,870.81
5. Step 5: Solve for x
   x = 1,607,870.81/1,082.75
6. Step 6: Final answer
   x = 1,484.99