Finding the Fourth Proportional to 1,000.09, 1,379.89 and 601.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,000.09 : 1,379.89 = 601.57 : x
2. Step 2: Convert to fraction form
   1,000.09/1,379.89 = 601.57/x
3. Step 3: Cross multiply
   1,000.09x = 1,379.89 × 601.57
4. Step 4: Simplify right side
   1,000.09x = 830,100.43
5. Step 5: Solve for x
   x = 830,100.43/1,000.09
6. Step 6: Final answer
   x = 830.03