Finding the Fourth Proportional to 2,607.82, 3,598.78 and 1,428.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.82 : 3,598.78 = 1,428.92 : x
2. Step 2: Convert to fraction form
   2,607.82/3,598.78 = 1,428.92/x
3. Step 3: Cross multiply
   2,607.82x = 3,598.78 × 1,428.92
4. Step 4: Simplify right side
   2,607.82x = 5,142,368.72
5. Step 5: Solve for x
   x = 5,142,368.72/2,607.82
6. Step 6: Final answer
   x = 1,971.90