Finding the Fourth Proportional to 1,420.53, 1,959.78 and 1,048.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,420.53 : 1,959.78 = 1,048.39 : x
2. Step 2: Convert to fraction form
   1,420.53/1,959.78 = 1,048.39/x
3. Step 3: Cross multiply
   1,420.53x = 1,959.78 × 1,048.39
4. Step 4: Simplify right side
   1,420.53x = 2,054,598.71
5. Step 5: Solve for x
   x = 2,054,598.71/1,420.53
6. Step 6: Final answer
   x = 1,446.37