Finding the Fourth Proportional to 2,885.88, 4,328.86 and 938.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,885.88 : 4,328.86 = 938.10 : x
2. Step 2: Convert to fraction form
   2,885.88/4,328.86 = 938.10/x
3. Step 3: Cross multiply
   2,885.88x = 4,328.86 × 938.10
4. Step 4: Simplify right side
   2,885.88x = 4,060,903.57
5. Step 5: Solve for x
   x = 4,060,903.57/2,885.88
6. Step 6: Final answer
   x = 1,407.16