Finding the Fourth Proportional to 1,338.35, 1,846.89 and 779.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338.35 : 1,846.89 = 779.00 : x
2. Step 2: Convert to fraction form
   1,338.35/1,846.89 = 779.00/x
3. Step 3: Cross multiply
   1,338.35x = 1,846.89 × 779.00
4. Step 4: Simplify right side
   1,338.35x = 1,438,718.08
5. Step 5: Solve for x
   x = 1,438,718.08/1,338.35
6. Step 6: Final answer
   x = 1,075.00