Finding the Fourth Proportional to 1,478.69, 2,040.51 and 849.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,478.69 : 2,040.51 = 849.15 : x
2. Step 2: Convert to fraction form
   1,478.69/2,040.51 = 849.15/x
3. Step 3: Cross multiply
   1,478.69x = 2,040.51 × 849.15
4. Step 4: Simplify right side
   1,478.69x = 1,732,699.07
5. Step 5: Solve for x
   x = 1,732,699.07/1,478.69
6. Step 6: Final answer
   x = 1,171.78