Finding the Fourth Proportional to 1,368.37, 1,888.50 and 779.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368.37 : 1,888.50 = 779.05 : x
2. Step 2: Convert to fraction form
   1,368.37/1,888.50 = 779.05/x
3. Step 3: Cross multiply
   1,368.37x = 1,888.50 × 779.05
4. Step 4: Simplify right side
   1,368.37x = 1,471,235.93
5. Step 5: Solve for x
   x = 1,471,235.93/1,368.37
6. Step 6: Final answer
   x = 1,075.17