Finding the Fourth Proportional to 1,783.57, 2,461.33 and 986.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,783.57 : 2,461.33 = 986.95 : x
2. Step 2: Convert to fraction form
   1,783.57/2,461.33 = 986.95/x
3. Step 3: Cross multiply
   1,783.57x = 2,461.33 × 986.95
4. Step 4: Simplify right side
   1,783.57x = 2,429,209.64
5. Step 5: Solve for x
   x = 2,429,209.64/1,783.57
6. Step 6: Final answer
   x = 1,361.99