Finding the Fourth Proportional to 1,588.41, 2,184.57 and 1,391.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,588.41 : 2,184.57 = 1,391.58 : x
2. Step 2: Convert to fraction form
   1,588.41/2,184.57 = 1,391.58/x
3. Step 3: Cross multiply
   1,588.41x = 2,184.57 × 1,391.58
4. Step 4: Simplify right side
   1,588.41x = 3,040,003.92
5. Step 5: Solve for x
   x = 3,040,003.92/1,588.41
6. Step 6: Final answer
   x = 1,913.87