Finding the Fourth Proportional to 3,719.63, 5,581.61 and 1,667.63

Step by Step Solution

1. Step 1: Write the proportion equation
   3,719.63 : 5,581.61 = 1,667.63 : x
2. Step 2: Convert to fraction form
   3,719.63/5,581.61 = 1,667.63/x
3. Step 3: Cross multiply
   3,719.63x = 5,581.61 × 1,667.63
4. Step 4: Simplify right side
   3,719.63x = 9,308,024.04
5. Step 5: Solve for x
   x = 9,308,024.04/3,719.63
6. Step 6: Final answer
   x = 2,502.41