Finding the Fourth Proportional to 3,665.60, 5,495.95 and 1,887.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,665.60 : 5,495.95 = 1,887.81 : x
2. Step 2: Convert to fraction form
   3,665.60/5,495.95 = 1,887.81/x
3. Step 3: Cross multiply
   3,665.60x = 5,495.95 × 1,887.81
4. Step 4: Simplify right side
   3,665.60x = 10,375,304.65
5. Step 5: Solve for x
   x = 10,375,304.65/3,665.60
6. Step 6: Final answer
   x = 2,830.46