Finding the Fourth Proportional to 2,085.02, 3,127.35 and 698.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.02 : 3,127.35 = 698.30 : x
2. Step 2: Convert to fraction form
   2,085.02/3,127.35 = 698.30/x
3. Step 3: Cross multiply
   2,085.02x = 3,127.35 × 698.30
4. Step 4: Simplify right side
   2,085.02x = 2,183,828.51
5. Step 5: Solve for x
   x = 2,183,828.51/2,085.02
6. Step 6: Final answer
   x = 1,047.39