Finding the Fourth Proportional to 1,667.71, 2,499.83 and 571.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.71 : 2,499.83 = 571.69 : x
2. Step 2: Convert to fraction form
   1,667.71/2,499.83 = 571.69/x
3. Step 3: Cross multiply
   1,667.71x = 2,499.83 × 571.69
4. Step 4: Simplify right side
   1,667.71x = 1,429,124.95
5. Step 5: Solve for x
   x = 1,429,124.95/1,667.71
6. Step 6: Final answer
   x = 856.94