Finding the Fourth Proportional to 1,303.46, 1,798.72 and 779.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,303.46 : 1,798.72 = 779.39 : x
2. Step 2: Convert to fraction form
   1,303.46/1,798.72 = 779.39/x
3. Step 3: Cross multiply
   1,303.46x = 1,798.72 × 779.39
4. Step 4: Simplify right side
   1,303.46x = 1,401,904.38
5. Step 5: Solve for x
   x = 1,401,904.38/1,303.46
6. Step 6: Final answer
   x = 1,075.53