Finding the Fourth Proportional to 2,390.41, 3,585.60 and 1,415.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,390.41 : 3,585.60 = 1,415.81 : x
2. Step 2: Convert to fraction form
   2,390.41/3,585.60 = 1,415.81/x
3. Step 3: Cross multiply
   2,390.41x = 3,585.60 × 1,415.81
4. Step 4: Simplify right side
   2,390.41x = 5,076,537.30
5. Step 5: Solve for x
   x = 5,076,537.30/2,390.41
6. Step 6: Final answer
   x = 2,123.71