Finding the Fourth Proportional to 1,477.82, 2,215.52 and 697.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,477.82 : 2,215.52 = 697.44 : x
2. Step 2: Convert to fraction form
   1,477.82/2,215.52 = 697.44/x
3. Step 3: Cross multiply
   1,477.82x = 2,215.52 × 697.44
4. Step 4: Simplify right side
   1,477.82x = 1,545,192.27
5. Step 5: Solve for x
   x = 1,545,192.27/1,477.82
6. Step 6: Final answer
   x = 1,045.59