Finding the Fourth Proportional to 1,588.52, 2,191.65 and 889.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,588.52 : 2,191.65 = 889.76 : x
2. Step 2: Convert to fraction form
   1,588.52/2,191.65 = 889.76/x
3. Step 3: Cross multiply
   1,588.52x = 2,191.65 × 889.76
4. Step 4: Simplify right side
   1,588.52x = 1,950,042.50
5. Step 5: Solve for x
   x = 1,950,042.50/1,588.52
6. Step 6: Final answer
   x = 1,227.58