Finding the Fourth Proportional to 1,431.46, 2,146.32 and 700.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,431.46 : 2,146.32 = 700.12 : x
2. Step 2: Convert to fraction form
   1,431.46/2,146.32 = 700.12/x
3. Step 3: Cross multiply
   1,431.46x = 2,146.32 × 700.12
4. Step 4: Simplify right side
   1,431.46x = 1,502,681.56
5. Step 5: Solve for x
   x = 1,502,681.56/1,431.46
6. Step 6: Final answer
   x = 1,049.75