Finding the Fourth Proportional to 3,665.80, 5,499.06 and 1,068.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.80 : 5,499.06 = 1,068.76 : x
2. Step 2: Convert to fraction form
   3,665.80/5,499.06 = 1,068.76/x
3. Step 3: Cross multiply
   3,665.80x = 5,499.06 × 1,068.76
4. Step 4: Simplify right side
   3,665.80x = 5,877,175.37
5. Step 5: Solve for x
   x = 5,877,175.37/3,665.80
6. Step 6: Final answer
   x = 1,603.24