Finding the Fourth Proportional to 2,835.89, 4,255.77 and 986.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,835.89 : 4,255.77 = 986.99 : x
2. Step 2: Convert to fraction form
   2,835.89/4,255.77 = 986.99/x
3. Step 3: Cross multiply
   2,835.89x = 4,255.77 × 986.99
4. Step 4: Simplify right side
   2,835.89x = 4,200,384.85
5. Step 5: Solve for x
   x = 4,200,384.85/2,835.89
6. Step 6: Final answer
   x = 1,481.15