Finding the Fourth Proportional to 1,588.35, 2,191.86 and 889.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,588.35 : 2,191.86 = 889.71 : x
2. Step 2: Convert to fraction form
   1,588.35/2,191.86 = 889.71/x
3. Step 3: Cross multiply
   1,588.35x = 2,191.86 × 889.71
4. Step 4: Simplify right side
   1,588.35x = 1,950,119.76
5. Step 5: Solve for x
   x = 1,950,119.76/1,588.35
6. Step 6: Final answer
   x = 1,227.76