Finding the Fourth Proportional to 1,588.05, 2,191.50 and 889.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,588.05 : 2,191.50 = 889.38 : x
2. Step 2: Convert to fraction form
   1,588.05/2,191.50 = 889.38/x
3. Step 3: Cross multiply
   1,588.05x = 2,191.50 × 889.38
4. Step 4: Simplify right side
   1,588.05x = 1,949,076.27
5. Step 5: Solve for x
   x = 1,949,076.27/1,588.05
6. Step 6: Final answer
   x = 1,227.34