Finding the Fourth Proportional to 2,086.06, 2,877.75 and 1,378.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,086.06 : 2,877.75 = 1,378.18 : x
2. Step 2: Convert to fraction form
   2,086.06/2,877.75 = 1,378.18/x
3. Step 3: Cross multiply
   2,086.06x = 2,877.75 × 1,378.18
4. Step 4: Simplify right side
   2,086.06x = 3,966,057.50
5. Step 5: Solve for x
   x = 3,966,057.50/2,086.06
6. Step 6: Final answer
   x = 1,901.22