Finding the Fourth Proportional to 2,439.61, 3,366.71 and 1,377.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,439.61 : 3,366.71 = 1,377.59 : x
2. Step 2: Convert to fraction form
   2,439.61/3,366.71 = 1,377.59/x
3. Step 3: Cross multiply
   2,439.61x = 3,366.71 × 1,377.59
4. Step 4: Simplify right side
   2,439.61x = 4,637,946.03
5. Step 5: Solve for x
   x = 4,637,946.03/2,439.61
6. Step 6: Final answer
   x = 1,901.10