Finding the Fourth Proportional to 1,581.73, 2,184.24 and 1,188.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,581.73 : 2,184.24 = 1,188.07 : x
2. Step 2: Convert to fraction form
   1,581.73/2,184.24 = 1,188.07/x
3. Step 3: Cross multiply
   1,581.73x = 2,184.24 × 1,188.07
4. Step 4: Simplify right side
   1,581.73x = 2,595,030.02
5. Step 5: Solve for x
   x = 2,595,030.02/1,581.73
6. Step 6: Final answer
   x = 1,640.63