Finding the Fourth Proportional to 1,588.17, 2,191.72 and 889.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,588.17 : 2,191.72 = 889.54 : x
2. Step 2: Convert to fraction form
   1,588.17/2,191.72 = 889.54/x
3. Step 3: Cross multiply
   1,588.17x = 2,191.72 × 889.54
4. Step 4: Simplify right side
   1,588.17x = 1,949,622.61
5. Step 5: Solve for x
   x = 1,949,622.61/1,588.17
6. Step 6: Final answer
   x = 1,227.59