Finding the Fourth Proportional to 2,086.95, 2,880.30 and 1,202.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.95 : 2,880.30 = 1,202.61 : x
2. Step 2: Convert to fraction form
   2,086.95/2,880.30 = 1,202.61/x
3. Step 3: Cross multiply
   2,086.95x = 2,880.30 × 1,202.61
4. Step 4: Simplify right side
   2,086.95x = 3,463,877.58
5. Step 5: Solve for x
   x = 3,463,877.58/2,086.95
6. Step 6: Final answer
   x = 1,659.78