Finding the Fourth Proportional to 1,354.04, 1,868.48 and 779.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354.04 : 1,868.48 = 779.15 : x
2. Step 2: Convert to fraction form
   1,354.04/1,868.48 = 779.15/x
3. Step 3: Cross multiply
   1,354.04x = 1,868.48 × 779.15
4. Step 4: Simplify right side
   1,354.04x = 1,455,812.95
5. Step 5: Solve for x
   x = 1,455,812.95/1,354.04
6. Step 6: Final answer
   x = 1,075.17