Finding the Fourth Proportional to 2,607.11, 3,597.78 and 1,428.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.11 : 3,597.78 = 1,428.17 : x
2. Step 2: Convert to fraction form
   2,607.11/3,597.78 = 1,428.17/x
3. Step 3: Cross multiply
   2,607.11x = 3,597.78 × 1,428.17
4. Step 4: Simplify right side
   2,607.11x = 5,138,241.46
5. Step 5: Solve for x
   x = 5,138,241.46/2,607.11
6. Step 6: Final answer
   x = 1,970.86