Finding the Fourth Proportional to 1,085.93, 1,631.48 and 696.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.93 : 1,631.48 = 696.69 : x
2. Step 2: Convert to fraction form
   1,085.93/1,631.48 = 696.69/x
3. Step 3: Cross multiply
   1,085.93x = 1,631.48 × 696.69
4. Step 4: Simplify right side
   1,085.93x = 1,136,642.78
5. Step 5: Solve for x
   x = 1,136,642.78/1,085.93
6. Step 6: Final answer
   x = 1,046.70