Finding the Fourth Proportional to 1,047.89, 1,445.96 and 605.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.89 : 1,445.96 = 605.76 : x
2. Step 2: Convert to fraction form
   1,047.89/1,445.96 = 605.76/x
3. Step 3: Cross multiply
   1,047.89x = 1,445.96 × 605.76
4. Step 4: Simplify right side
   1,047.89x = 875,901.70
5. Step 5: Solve for x
   x = 875,901.70/1,047.89
6. Step 6: Final answer
   x = 835.88