Finding the Fourth Proportional to 2,075.32, 3,113.58 and 776.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.32 : 3,113.58 = 776.89 : x
2. Step 2: Convert to fraction form
   2,075.32/3,113.58 = 776.89/x
3. Step 3: Cross multiply
   2,075.32x = 3,113.58 × 776.89
4. Step 4: Simplify right side
   2,075.32x = 2,418,909.17
5. Step 5: Solve for x
   x = 2,418,909.17/2,075.32
6. Step 6: Final answer
   x = 1,165.56