Finding the Fourth Proportional to 1,280.00, 1,921.52 and 1,077.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,280.00 : 1,921.52 = 1,077.10 : x
2. Step 2: Convert to fraction form
   1,280.00/1,921.52 = 1,077.10/x
3. Step 3: Cross multiply
   1,280.00x = 1,921.52 × 1,077.10
4. Step 4: Simplify right side
   1,280.00x = 2,069,667.08
5. Step 5: Solve for x
   x = 2,069,667.08/1,280.00
6. Step 6: Final answer
   x = 1,616.92