Finding the Fourth Proportional to 2,607.59, 3,598.43 and 1,428.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.59 : 3,598.43 = 1,428.63 : x
2. Step 2: Convert to fraction form
   2,607.59/3,598.43 = 1,428.63/x
3. Step 3: Cross multiply
   2,607.59x = 3,598.43 × 1,428.63
4. Step 4: Simplify right side
   2,607.59x = 5,140,817.91
5. Step 5: Solve for x
   x = 5,140,817.91/2,607.59
6. Step 6: Final answer
   x = 1,971.49