Finding the Fourth Proportional to 1,588.92, 2,192.72 and 890.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,588.92 : 2,192.72 = 890.25 : x
2. Step 2: Convert to fraction form
   1,588.92/2,192.72 = 890.25/x
3. Step 3: Cross multiply
   1,588.92x = 2,192.72 × 890.25
4. Step 4: Simplify right side
   1,588.92x = 1,952,064.53
5. Step 5: Solve for x
   x = 1,952,064.53/1,588.92
6. Step 6: Final answer
   x = 1,228.55