Finding the Fourth Proportional to 2,490.76, 3,734.89 and 930.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,490.76 : 3,734.89 = 930.50 : x
2. Step 2: Convert to fraction form
   2,490.76/3,734.89 = 930.50/x
3. Step 3: Cross multiply
   2,490.76x = 3,734.89 × 930.50
4. Step 4: Simplify right side
   2,490.76x = 3,475,294.14
5. Step 5: Solve for x
   x = 3,475,294.14/2,490.76
6. Step 6: Final answer
   x = 1,395.28