Finding the Fourth Proportional to 1,588.09, 2,191.57 and 889.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,588.09 : 2,191.57 = 889.47 : x
2. Step 2: Convert to fraction form
   1,588.09/2,191.57 = 889.47/x
3. Step 3: Cross multiply
   1,588.09x = 2,191.57 × 889.47
4. Step 4: Simplify right side
   1,588.09x = 1,949,335.77
5. Step 5: Solve for x
   x = 1,949,335.77/1,588.09
6. Step 6: Final answer
   x = 1,227.47