Finding the Fourth Proportional to 1,667.42, 2,500.53 and 571.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,667.42 : 2,500.53 = 571.49 : x
2. Step 2: Convert to fraction form
   1,667.42/2,500.53 = 571.49/x
3. Step 3: Cross multiply
   1,667.42x = 2,500.53 × 571.49
4. Step 4: Simplify right side
   1,667.42x = 1,429,027.89
5. Step 5: Solve for x
   x = 1,429,027.89/1,667.42
6. Step 6: Final answer
   x = 857.03