Finding the Fourth Proportional to 1,787.81, 2,466.86 and 1,079.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,787.81 : 2,466.86 = 1,079.46 : x
2. Step 2: Convert to fraction form
   1,787.81/2,466.86 = 1,079.46/x
3. Step 3: Cross multiply
   1,787.81x = 2,466.86 × 1,079.46
4. Step 4: Simplify right side
   1,787.81x = 2,662,871.30
5. Step 5: Solve for x
   x = 2,662,871.30/1,787.81
6. Step 6: Final answer
   x = 1,489.46