Finding the Fourth Proportional to 1,803.05, 2,702.72 and 692.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,803.05 : 2,702.72 = 692.20 : x
2. Step 2: Convert to fraction form
   1,803.05/2,702.72 = 692.20/x
3. Step 3: Cross multiply
   1,803.05x = 2,702.72 × 692.20
4. Step 4: Simplify right side
   1,803.05x = 1,870,819.32
5. Step 5: Solve for x
   x = 1,870,819.32/1,803.05
6. Step 6: Final answer
   x = 1,037.59