Finding the Fourth Proportional to 1,788.16, 2,680.41 and 692.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,788.16 : 2,680.41 = 692.10 : x
2. Step 2: Convert to fraction form
   1,788.16/2,680.41 = 692.10/x
3. Step 3: Cross multiply
   1,788.16x = 2,680.41 × 692.10
4. Step 4: Simplify right side
   1,788.16x = 1,855,111.76
5. Step 5: Solve for x
   x = 1,855,111.76/1,788.16
6. Step 6: Final answer
   x = 1,037.44