Finding the Fourth Proportional to 2,478.46, 3,715.77 and 1,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478.46 : 3,715.77 = 1,109.50 : x
2. Step 2: Convert to fraction form
   2,478.46/3,715.77 = 1,109.50/x
3. Step 3: Cross multiply
   2,478.46x = 3,715.77 × 1,109.50
4. Step 4: Simplify right side
   2,478.46x = 4,122,646.82
5. Step 5: Solve for x
   x = 4,122,646.82/2,478.46
6. Step 6: Final answer
   x = 1,663.39