Finding the Fourth Proportional to 1,401.86, 1,935.36 and 930.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.86 : 1,935.36 = 930.39 : x
2. Step 2: Convert to fraction form
   1,401.86/1,935.36 = 930.39/x
3. Step 3: Cross multiply
   1,401.86x = 1,935.36 × 930.39
4. Step 4: Simplify right side
   1,401.86x = 1,800,639.59
5. Step 5: Solve for x
   x = 1,800,639.59/1,401.86
6. Step 6: Final answer
   x = 1,284.47