Finding the Fourth Proportional to 2,400.21, 3,598.83 and 938.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,400.21 : 3,598.83 = 938.70 : x
2. Step 2: Convert to fraction form
   2,400.21/3,598.83 = 938.70/x
3. Step 3: Cross multiply
   2,400.21x = 3,598.83 × 938.70
4. Step 4: Simplify right side
   2,400.21x = 3,378,221.72
5. Step 5: Solve for x
   x = 3,378,221.72/2,400.21
6. Step 6: Final answer
   x = 1,407.47