Finding the Fourth Proportional to 1,667.86, 2,499.04 and 571.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.86 : 2,499.04 = 571.62 : x
2. Step 2: Convert to fraction form
   1,667.86/2,499.04 = 571.62/x
3. Step 3: Cross multiply
   1,667.86x = 2,499.04 × 571.62
4. Step 4: Simplify right side
   1,667.86x = 1,428,501.24
5. Step 5: Solve for x
   x = 1,428,501.24/1,667.86
6. Step 6: Final answer
   x = 856.49