Finding the Fourth Proportional to 1,588.08, 2,191.78 and 889.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,588.08 : 2,191.78 = 889.50 : x
2. Step 2: Convert to fraction form
   1,588.08/2,191.78 = 889.50/x
3. Step 3: Cross multiply
   1,588.08x = 2,191.78 × 889.50
4. Step 4: Simplify right side
   1,588.08x = 1,949,588.31
5. Step 5: Solve for x
   x = 1,949,588.31/1,588.08
6. Step 6: Final answer
   x = 1,227.64