Finding the Fourth Proportional to 1,345.49, 2,019.78 and 798.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.49 : 2,019.78 = 798.83 : x
2. Step 2: Convert to fraction form
   1,345.49/2,019.78 = 798.83/x
3. Step 3: Cross multiply
   1,345.49x = 2,019.78 × 798.83
4. Step 4: Simplify right side
   1,345.49x = 1,613,460.86
5. Step 5: Solve for x
   x = 1,613,460.86/1,345.49
6. Step 6: Final answer
   x = 1,199.16