Finding the Fourth Proportional to 1,002.06, 1,379.82 and 943.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.06 : 1,379.82 = 943.61 : x
2. Step 2: Convert to fraction form
   1,002.06/1,379.82 = 943.61/x
3. Step 3: Cross multiply
   1,002.06x = 1,379.82 × 943.61
4. Step 4: Simplify right side
   1,002.06x = 1,302,005.05
5. Step 5: Solve for x
   x = 1,302,005.05/1,002.06
6. Step 6: Final answer
   x = 1,299.33