Finding the Fourth Proportional to 1,038.85, 1,433.61 and 590.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,038.85 : 1,433.61 = 590.69 : x
2. Step 2: Convert to fraction form
   1,038.85/1,433.61 = 590.69/x
3. Step 3: Cross multiply
   1,038.85x = 1,433.61 × 590.69
4. Step 4: Simplify right side
   1,038.85x = 846,822.67
5. Step 5: Solve for x
   x = 846,822.67/1,038.85
6. Step 6: Final answer
   x = 815.16