Finding the Fourth Proportional to 1,368.50, 1,888.52 and 779.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,368.50 : 1,888.52 = 779.02 : x
2. Step 2: Convert to fraction form
   1,368.50/1,888.52 = 779.02/x
3. Step 3: Cross multiply
   1,368.50x = 1,888.52 × 779.02
4. Step 4: Simplify right side
   1,368.50x = 1,471,186.23
5. Step 5: Solve for x
   x = 1,471,186.23/1,368.50
6. Step 6: Final answer
   x = 1,075.04