Finding the Fourth Proportional to 2,280.36, 3,147.60 and 1,430.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.36 : 3,147.60 = 1,430.07 : x
2. Step 2: Convert to fraction form
   2,280.36/3,147.60 = 1,430.07/x
3. Step 3: Cross multiply
   2,280.36x = 3,147.60 × 1,430.07
4. Step 4: Simplify right side
   2,280.36x = 4,501,288.33
5. Step 5: Solve for x
   x = 4,501,288.33/2,280.36
6. Step 6: Final answer
   x = 1,973.94