Finding the Fourth Proportional to 1,062.54, 1,591.83 and 890.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,062.54 : 1,591.83 = 890.34 : x
2. Step 2: Convert to fraction form
   1,062.54/1,591.83 = 890.34/x
3. Step 3: Cross multiply
   1,062.54x = 1,591.83 × 890.34
4. Step 4: Simplify right side
   1,062.54x = 1,417,269.92
5. Step 5: Solve for x
   x = 1,417,269.92/1,062.54
6. Step 6: Final answer
   x = 1,333.85