Finding the Fourth Proportional to 1,439.87, 1,985.58 and 1,341.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,439.87 : 1,985.58 = 1,341.59 : x
2. Step 2: Convert to fraction form
   1,439.87/1,985.58 = 1,341.59/x
3. Step 3: Cross multiply
   1,439.87x = 1,985.58 × 1,341.59
4. Step 4: Simplify right side
   1,439.87x = 2,663,824.34
5. Step 5: Solve for x
   x = 2,663,824.34/1,439.87
6. Step 6: Final answer
   x = 1,850.05