Finding the Fourth Proportional to 1,337.48, 1,846.37 and 890.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,337.48 : 1,846.37 = 890.10 : x
2. Step 2: Convert to fraction form
   1,337.48/1,846.37 = 890.10/x
3. Step 3: Cross multiply
   1,337.48x = 1,846.37 × 890.10
4. Step 4: Simplify right side
   1,337.48x = 1,643,444.57
5. Step 5: Solve for x
   x = 1,643,444.57/1,337.48
6. Step 6: Final answer
   x = 1,228.76