Finding the Fourth Proportional to 1,588.82, 2,192.45 and 890.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,588.82 : 2,192.45 = 890.10 : x
2. Step 2: Convert to fraction form
   1,588.82/2,192.45 = 890.10/x
3. Step 3: Cross multiply
   1,588.82x = 2,192.45 × 890.10
4. Step 4: Simplify right side
   1,588.82x = 1,951,499.75
5. Step 5: Solve for x
   x = 1,951,499.75/1,588.82
6. Step 6: Final answer
   x = 1,228.27