Finding the Fourth Proportional to 1,787.72, 2,682.22 and 692.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,787.72 : 2,682.22 = 692.18 : x
2. Step 2: Convert to fraction form
   1,787.72/2,682.22 = 692.18/x
3. Step 3: Cross multiply
   1,787.72x = 2,682.22 × 692.18
4. Step 4: Simplify right side
   1,787.72x = 1,856,579.04
5. Step 5: Solve for x
   x = 1,856,579.04/1,787.72
6. Step 6: Final answer
   x = 1,038.52