Finding the Fourth Proportional to 1,598.31, 2,205.61 and 890.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,598.31 : 2,205.61 = 890.14 : x
2. Step 2: Convert to fraction form
   1,598.31/2,205.61 = 890.14/x
3. Step 3: Cross multiply
   1,598.31x = 2,205.61 × 890.14
4. Step 4: Simplify right side
   1,598.31x = 1,963,301.69
5. Step 5: Solve for x
   x = 1,963,301.69/1,598.31
6. Step 6: Final answer
   x = 1,228.36