Finding the Fourth Proportional to 2,665.55, 3,678.54 and 1,486.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.55 : 3,678.54 = 1,486.60 : x
2. Step 2: Convert to fraction form
   2,665.55/3,678.54 = 1,486.60/x
3. Step 3: Cross multiply
   2,665.55x = 3,678.54 × 1,486.60
4. Step 4: Simplify right side
   2,665.55x = 5,468,508.37
5. Step 5: Solve for x
   x = 5,468,508.37/2,665.55
6. Step 6: Final answer
   x = 2,051.55