Finding the Fourth Proportional to 2,045.80, 3,068.72 and 747.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,045.80 : 3,068.72 = 747.64 : x
2. Step 2: Convert to fraction form
   2,045.80/3,068.72 = 747.64/x
3. Step 3: Cross multiply
   2,045.80x = 3,068.72 × 747.64
4. Step 4: Simplify right side
   2,045.80x = 2,294,297.82
5. Step 5: Solve for x
   x = 2,294,297.82/2,045.80
6. Step 6: Final answer
   x = 1,121.47