Finding the Fourth Proportional to 1,081.06, 1,491.93 and 602.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.06 : 1,491.93 = 602.59 : x
2. Step 2: Convert to fraction form
   1,081.06/1,491.93 = 602.59/x
3. Step 3: Cross multiply
   1,081.06x = 1,491.93 × 602.59
4. Step 4: Simplify right side
   1,081.06x = 899,011.63
5. Step 5: Solve for x
   x = 899,011.63/1,081.06
6. Step 6: Final answer
   x = 831.61