Finding the Fourth Proportional to 3,665.44, 5,499.12 and 1,068.40

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.44 : 5,499.12 = 1,068.40 : x
2. Step 2: Convert to fraction form
   3,665.44/5,499.12 = 1,068.40/x
3. Step 3: Cross multiply
   3,665.44x = 5,499.12 × 1,068.40
4. Step 4: Simplify right side
   3,665.44x = 5,875,259.81
5. Step 5: Solve for x
   x = 5,875,259.81/3,665.44
6. Step 6: Final answer
   x = 1,602.88