Finding the Fourth Proportional to 1,662.82, 2,294.70 and 1,139.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.82 : 2,294.70 = 1,139.02 : x
2. Step 2: Convert to fraction form
   1,662.82/2,294.70 = 1,139.02/x
3. Step 3: Cross multiply
   1,662.82x = 2,294.70 × 1,139.02
4. Step 4: Simplify right side
   1,662.82x = 2,613,709.19
5. Step 5: Solve for x
   x = 2,613,709.19/1,662.82
6. Step 6: Final answer
   x = 1,571.85