Finding the Fourth Proportional to 1,870.42, 2,579.43 and 1,478.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.42 : 2,579.43 = 1,478.38 : x
2. Step 2: Convert to fraction form
   1,870.42/2,579.43 = 1,478.38/x
3. Step 3: Cross multiply
   1,870.42x = 2,579.43 × 1,478.38
4. Step 4: Simplify right side
   1,870.42x = 3,813,377.72
5. Step 5: Solve for x
   x = 3,813,377.72/1,870.42
6. Step 6: Final answer
   x = 2,038.78