Finding the Fourth Proportional to 1,588.38, 2,191.86 and 889.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,588.38 : 2,191.86 = 889.62 : x
2. Step 2: Convert to fraction form
   1,588.38/2,191.86 = 889.62/x
3. Step 3: Cross multiply
   1,588.38x = 2,191.86 × 889.62
4. Step 4: Simplify right side
   1,588.38x = 1,949,922.49
5. Step 5: Solve for x
   x = 1,949,922.49/1,588.38
6. Step 6: Final answer
   x = 1,227.62