Finding the Fourth Proportional to 2,478.59, 3,420.54 and 1,359.53

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478.59 : 3,420.54 = 1,359.53 : x
2. Step 2: Convert to fraction form
   2,478.59/3,420.54 = 1,359.53/x
3. Step 3: Cross multiply
   2,478.59x = 3,420.54 × 1,359.53
4. Step 4: Simplify right side
   2,478.59x = 4,650,322.47
5. Step 5: Solve for x
   x = 4,650,322.47/2,478.59
6. Step 6: Final answer
   x = 1,876.20