Finding the Fourth Proportional to 1,667.85, 2,499.05 and 571.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.85 : 2,499.05 = 571.62 : x
2. Step 2: Convert to fraction form
   1,667.85/2,499.05 = 571.62/x
3. Step 3: Cross multiply
   1,667.85x = 2,499.05 × 571.62
4. Step 4: Simplify right side
   1,667.85x = 1,428,506.96
5. Step 5: Solve for x
   x = 1,428,506.96/1,667.85
6. Step 6: Final answer
   x = 856.50