Finding the Fourth Proportional to 1,429.20, 2,142.88 and 606.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429.20 : 2,142.88 = 606.94 : x
2. Step 2: Convert to fraction form
   1,429.20/2,142.88 = 606.94/x
3. Step 3: Cross multiply
   1,429.20x = 2,142.88 × 606.94
4. Step 4: Simplify right side
   1,429.20x = 1,300,592.71
5. Step 5: Solve for x
   x = 1,300,592.71/1,429.20
6. Step 6: Final answer
   x = 910.01