Finding the Fourth Proportional to 1,068.86, 1,601.40 and 490.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,068.86 : 1,601.40 = 490.52 : x
2. Step 2: Convert to fraction form
   1,068.86/1,601.40 = 490.52/x
3. Step 3: Cross multiply
   1,068.86x = 1,601.40 × 490.52
4. Step 4: Simplify right side
   1,068.86x = 785,518.73
5. Step 5: Solve for x
   x = 785,518.73/1,068.86
6. Step 6: Final answer
   x = 734.91