Finding the Fourth Proportional to 2,477.01, 3,417.74 and 1,428.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,477.01 : 3,417.74 = 1,428.47 : x
2. Step 2: Convert to fraction form
   2,477.01/3,417.74 = 1,428.47/x
3. Step 3: Cross multiply
   2,477.01x = 3,417.74 × 1,428.47
4. Step 4: Simplify right side
   2,477.01x = 4,882,141.04
5. Step 5: Solve for x
   x = 4,882,141.04/2,477.01
6. Step 6: Final answer
   x = 1,970.98