Finding the Fourth Proportional to 2,607.53, 3,598.29 and 1,428.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.53 : 3,598.29 = 1,428.57 : x
2. Step 2: Convert to fraction form
   2,607.53/3,598.29 = 1,428.57/x
3. Step 3: Cross multiply
   2,607.53x = 3,598.29 × 1,428.57
4. Step 4: Simplify right side
   2,607.53x = 5,140,409.15
5. Step 5: Solve for x
   x = 5,140,409.15/2,607.53
6. Step 6: Final answer
   x = 1,971.37