Finding the Fourth Proportional to 1,429.46, 1,972.69 and 1,010.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.46 : 1,972.69 = 1,010.55 : x
2. Step 2: Convert to fraction form
   1,429.46/1,972.69 = 1,010.55/x
3. Step 3: Cross multiply
   1,429.46x = 1,972.69 × 1,010.55
4. Step 4: Simplify right side
   1,429.46x = 1,993,498.09
5. Step 5: Solve for x
   x = 1,993,498.09/1,429.46
6. Step 6: Final answer
   x = 1,394.58