Finding the Fourth Proportional to 1,666.06, 2,481.62 and 1,581.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,666.06 : 2,481.62 = 1,581.82 : x
2. Step 2: Convert to fraction form
   1,666.06/2,481.62 = 1,581.82/x
3. Step 3: Cross multiply
   1,666.06x = 2,481.62 × 1,581.82
4. Step 4: Simplify right side
   1,666.06x = 3,925,476.15
5. Step 5: Solve for x
   x = 3,925,476.15/1,666.06
6. Step 6: Final answer
   x = 2,356.14