Finding the Fourth Proportional to 1,713.83, 2,567.31 and 788.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,713.83 : 2,567.31 = 788.10 : x
2. Step 2: Convert to fraction form
   1,713.83/2,567.31 = 788.10/x
3. Step 3: Cross multiply
   1,713.83x = 2,567.31 × 788.10
4. Step 4: Simplify right side
   1,713.83x = 2,023,297.01
5. Step 5: Solve for x
   x = 2,023,297.01/1,713.83
6. Step 6: Final answer
   x = 1,180.57