Finding the Fourth Proportional to 2,885.86, 4,328.76 and 938.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,885.86 : 4,328.76 = 938.14 : x
2. Step 2: Convert to fraction form
   2,885.86/4,328.76 = 938.14/x
3. Step 3: Cross multiply
   2,885.86x = 4,328.76 × 938.14
4. Step 4: Simplify right side
   2,885.86x = 4,060,982.91
5. Step 5: Solve for x
   x = 4,060,982.91/2,885.86
6. Step 6: Final answer
   x = 1,407.20