Finding the Fourth Proportional to 3,619.02, 5,428.56 and 1,021.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,619.02 : 5,428.56 = 1,021.98 : x
2. Step 2: Convert to fraction form
   3,619.02/5,428.56 = 1,021.98/x
3. Step 3: Cross multiply
   3,619.02x = 5,428.56 × 1,021.98
4. Step 4: Simplify right side
   3,619.02x = 5,547,879.75
5. Step 5: Solve for x
   x = 5,547,879.75/3,619.02
6. Step 6: Final answer
   x = 1,532.98