Finding the Fourth Proportional to 2,476.78, 3,417.90 and 1,357.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,476.78 : 3,417.90 = 1,357.71 : x
2. Step 2: Convert to fraction form
   2,476.78/3,417.90 = 1,357.71/x
3. Step 3: Cross multiply
   2,476.78x = 3,417.90 × 1,357.71
4. Step 4: Simplify right side
   2,476.78x = 4,640,517.01
5. Step 5: Solve for x
   x = 4,640,517.01/2,476.78
6. Step 6: Final answer
   x = 1,873.61