Finding the Fourth Proportional to 1,584.81, 2,377.67 and 1,387.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,584.81 : 2,377.67 = 1,387.98 : x
2. Step 2: Convert to fraction form
   1,584.81/2,377.67 = 1,387.98/x
3. Step 3: Cross multiply
   1,584.81x = 2,377.67 × 1,387.98
4. Step 4: Simplify right side
   1,584.81x = 3,300,158.41
5. Step 5: Solve for x
   x = 3,300,158.41/1,584.81
6. Step 6: Final answer
   x = 2,082.37