Finding the Fourth Proportional to 1,047.86, 1,445.81 and 605.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,047.86 : 1,445.81 = 605.51 : x
2. Step 2: Convert to fraction form
   1,047.86/1,445.81 = 605.51/x
3. Step 3: Cross multiply
   1,047.86x = 1,445.81 × 605.51
4. Step 4: Simplify right side
   1,047.86x = 875,442.16
5. Step 5: Solve for x
   x = 875,442.16/1,047.86
6. Step 6: Final answer
   x = 835.46