Finding the Fourth Proportional to 1,338.59, 1,847.27 and 779.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338.59 : 1,847.27 = 779.08 : x
2. Step 2: Convert to fraction form
   1,338.59/1,847.27 = 779.08/x
3. Step 3: Cross multiply
   1,338.59x = 1,847.27 × 779.08
4. Step 4: Simplify right side
   1,338.59x = 1,439,162.60
5. Step 5: Solve for x
   x = 1,439,162.60/1,338.59
6. Step 6: Final answer
   x = 1,075.13