Finding the Fourth Proportional to 1,066.32, 1,588.25 and 998.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.32 : 1,588.25 = 998.82 : x
2. Step 2: Convert to fraction form
   1,066.32/1,588.25 = 998.82/x
3. Step 3: Cross multiply
   1,066.32x = 1,588.25 × 998.82
4. Step 4: Simplify right side
   1,066.32x = 1,586,378.36
5. Step 5: Solve for x
   x = 1,586,378.36/1,066.32
6. Step 6: Final answer
   x = 1,487.71