Finding the Fourth Proportional to 1,046.42, 1,570.69 and 698.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,046.42 : 1,570.69 = 698.63 : x
2. Step 2: Convert to fraction form
   1,046.42/1,570.69 = 698.63/x
3. Step 3: Cross multiply
   1,046.42x = 1,570.69 × 698.63
4. Step 4: Simplify right side
   1,046.42x = 1,097,324.17
5. Step 5: Solve for x
   x = 1,097,324.17/1,046.42
6. Step 6: Final answer
   x = 1,048.65