Finding the Fourth Proportional to 1,078.07, 1,616.94 and 530.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.07 : 1,616.94 = 530.10 : x
2. Step 2: Convert to fraction form
   1,078.07/1,616.94 = 530.10/x
3. Step 3: Cross multiply
   1,078.07x = 1,616.94 × 530.10
4. Step 4: Simplify right side
   1,078.07x = 857,139.89
5. Step 5: Solve for x
   x = 857,139.89/1,078.07
6. Step 6: Final answer
   x = 795.07