Finding the Fourth Proportional to 1,666.22, 2,499.56 and 1,563.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,666.22 : 2,499.56 = 1,563.71 : x
2. Step 2: Convert to fraction form
   1,666.22/2,499.56 = 1,563.71/x
3. Step 3: Cross multiply
   1,666.22x = 2,499.56 × 1,563.71
4. Step 4: Simplify right side
   1,666.22x = 3,908,572.52
5. Step 5: Solve for x
   x = 3,908,572.52/1,666.22
6. Step 6: Final answer
   x = 2,345.77