Finding the Fourth Proportional to 1,478.25, 2,216.94 and 697.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,478.25 : 2,216.94 = 697.82 : x
2. Step 2: Convert to fraction form
   1,478.25/2,216.94 = 697.82/x
3. Step 3: Cross multiply
   1,478.25x = 2,216.94 × 697.82
4. Step 4: Simplify right side
   1,478.25x = 1,547,011.37
5. Step 5: Solve for x
   x = 1,547,011.37/1,478.25
6. Step 6: Final answer
   x = 1,046.52