Finding the Fourth Proportional to 2,075.04, 3,113.30 and 776.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.04 : 3,113.30 = 776.72 : x
2. Step 2: Convert to fraction form
   2,075.04/3,113.30 = 776.72/x
3. Step 3: Cross multiply
   2,075.04x = 3,113.30 × 776.72
4. Step 4: Simplify right side
   2,075.04x = 2,418,162.38
5. Step 5: Solve for x
   x = 2,418,162.38/2,075.04
6. Step 6: Final answer
   x = 1,165.36