Finding the Fourth Proportional to 1,048.47, 1,446.96 and 693.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,048.47 : 1,446.96 = 693.78 : x
2. Step 2: Convert to fraction form
   1,048.47/1,446.96 = 693.78/x
3. Step 3: Cross multiply
   1,048.47x = 1,446.96 × 693.78
4. Step 4: Simplify right side
   1,048.47x = 1,003,871.91
5. Step 5: Solve for x
   x = 1,003,871.91/1,048.47
6. Step 6: Final answer
   x = 957.46