Finding the Fourth Proportional to 2,476.46, 3,417.81 and 1,428.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,476.46 : 3,417.81 = 1,428.50 : x
2. Step 2: Convert to fraction form
   2,476.46/3,417.81 = 1,428.50/x
3. Step 3: Cross multiply
   2,476.46x = 3,417.81 × 1,428.50
4. Step 4: Simplify right side
   2,476.46x = 4,882,341.59
5. Step 5: Solve for x
   x = 4,882,341.59/2,476.46
6. Step 6: Final answer
   x = 1,971.50