Finding the Fourth Proportional to 1,424.52, 2,133.54 and 1,280.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,424.52 : 2,133.54 = 1,280.34 : x
2. Step 2: Convert to fraction form
   1,424.52/2,133.54 = 1,280.34/x
3. Step 3: Cross multiply
   1,424.52x = 2,133.54 × 1,280.34
4. Step 4: Simplify right side
   1,424.52x = 2,731,656.60
5. Step 5: Solve for x
   x = 2,731,656.60/1,424.52
6. Step 6: Final answer
   x = 1,917.60