Finding the Fourth Proportional to 1,006.42, 1,389.81 and 951.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,006.42 : 1,389.81 = 951.88 : x
2. Step 2: Convert to fraction form
   1,006.42/1,389.81 = 951.88/x
3. Step 3: Cross multiply
   1,006.42x = 1,389.81 × 951.88
4. Step 4: Simplify right side
   1,006.42x = 1,322,932.34
5. Step 5: Solve for x
   x = 1,322,932.34/1,006.42
6. Step 6: Final answer
   x = 1,314.49