Finding the Fourth Proportional to 1,692.30, 2,536.72 and 1,143.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,692.30 : 2,536.72 = 1,143.18 : x
2. Step 2: Convert to fraction form
   1,692.30/2,536.72 = 1,143.18/x
3. Step 3: Cross multiply
   1,692.30x = 2,536.72 × 1,143.18
4. Step 4: Simplify right side
   1,692.30x = 2,899,927.57
5. Step 5: Solve for x
   x = 2,899,927.57/1,692.30
6. Step 6: Final answer
   x = 1,713.60