Finding the Fourth Proportional to 1,068.74, 1,601.70 and 606.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,068.74 : 1,601.70 = 606.72 : x
2. Step 2: Convert to fraction form
   1,068.74/1,601.70 = 606.72/x
3. Step 3: Cross multiply
   1,068.74x = 1,601.70 × 606.72
4. Step 4: Simplify right side
   1,068.74x = 971,783.42
5. Step 5: Solve for x
   x = 971,783.42/1,068.74
6. Step 6: Final answer
   x = 909.28