Finding the Fourth Proportional to 3,615.83, 5,423.12 and 1,667.87

Step by Step Solution

1. Step 1: Write the proportion equation
   3,615.83 : 5,423.12 = 1,667.87 : x
2. Step 2: Convert to fraction form
   3,615.83/5,423.12 = 1,667.87/x
3. Step 3: Cross multiply
   3,615.83x = 5,423.12 × 1,667.87
4. Step 4: Simplify right side
   3,615.83x = 9,045,050.82
5. Step 5: Solve for x
   x = 9,045,050.82/3,615.83
6. Step 6: Final answer
   x = 2,501.51