Finding the Fourth Proportional to 2,607.66, 3,598.52 and 1,428.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.66 : 3,598.52 = 1,428.71 : x
2. Step 2: Convert to fraction form
   2,607.66/3,598.52 = 1,428.71/x
3. Step 3: Cross multiply
   2,607.66x = 3,598.52 × 1,428.71
4. Step 4: Simplify right side
   2,607.66x = 5,141,216.37
5. Step 5: Solve for x
   x = 5,141,216.37/2,607.66
6. Step 6: Final answer
   x = 1,971.58