Finding the Fourth Proportional to 2,085.18, 3,127.46 and 698.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.18 : 3,127.46 = 698.52 : x
2. Step 2: Convert to fraction form
   2,085.18/3,127.46 = 698.52/x
3. Step 3: Cross multiply
   2,085.18x = 3,127.46 × 698.52
4. Step 4: Simplify right side
   2,085.18x = 2,184,593.36
5. Step 5: Solve for x
   x = 2,184,593.36/2,085.18
6. Step 6: Final answer
   x = 1,047.68