Finding the Fourth Proportional to 2,607.58, 3,598.46 and 1,428.65

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.58 : 3,598.46 = 1,428.65 : x
2. Step 2: Convert to fraction form
   2,607.58/3,598.46 = 1,428.65/x
3. Step 3: Cross multiply
   2,607.58x = 3,598.46 × 1,428.65
4. Step 4: Simplify right side
   2,607.58x = 5,140,919.46
5. Step 5: Solve for x
   x = 5,140,919.46/2,607.58
6. Step 6: Final answer
   x = 1,971.53