Finding the Fourth Proportional to 1,787.30, 2,681.83 and 800.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,787.30 : 2,681.83 = 800.40 : x
2. Step 2: Convert to fraction form
   1,787.30/2,681.83 = 800.40/x
3. Step 3: Cross multiply
   1,787.30x = 2,681.83 × 800.40
4. Step 4: Simplify right side
   1,787.30x = 2,146,536.73
5. Step 5: Solve for x
   x = 2,146,536.73/1,787.30
6. Step 6: Final answer
   x = 1,201.00