Finding the Fourth Proportional to 2,885.76, 4,329.18 and 938.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,885.76 : 4,329.18 = 938.07 : x
2. Step 2: Convert to fraction form
   2,885.76/4,329.18 = 938.07/x
3. Step 3: Cross multiply
   2,885.76x = 4,329.18 × 938.07
4. Step 4: Simplify right side
   2,885.76x = 4,061,073.88
5. Step 5: Solve for x
   x = 4,061,073.88/2,885.76
6. Step 6: Final answer
   x = 1,407.28