Finding the Fourth Proportional to 1,865.76, 2,797.71 and 1,086.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,865.76 : 2,797.71 = 1,086.02 : x
2. Step 2: Convert to fraction form
   1,865.76/2,797.71 = 1,086.02/x
3. Step 3: Cross multiply
   1,865.76x = 2,797.71 × 1,086.02
4. Step 4: Simplify right side
   1,865.76x = 3,038,369.01
5. Step 5: Solve for x
   x = 3,038,369.01/1,865.76
6. Step 6: Final answer
   x = 1,628.49