Finding the Fourth Proportional to 1,590.83, 2,385.83 and 494.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,590.83 : 2,385.83 = 494.63 : x
2. Step 2: Convert to fraction form
   1,590.83/2,385.83 = 494.63/x
3. Step 3: Cross multiply
   1,590.83x = 2,385.83 × 494.63
4. Step 4: Simplify right side
   1,590.83x = 1,180,088.69
5. Step 5: Solve for x
   x = 1,180,088.69/1,590.83
6. Step 6: Final answer
   x = 741.81