Finding the Fourth Proportional to 2,002.17, 2,996.49 and 1,428.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,002.17 : 2,996.49 = 1,428.76 : x
2. Step 2: Convert to fraction form
   2,002.17/2,996.49 = 1,428.76/x
3. Step 3: Cross multiply
   2,002.17x = 2,996.49 × 1,428.76
4. Step 4: Simplify right side
   2,002.17x = 4,281,282.58
5. Step 5: Solve for x
   x = 4,281,282.58/2,002.17
6. Step 6: Final answer
   x = 2,138.32