Finding the Fourth Proportional to 1,620.69, 2,428.98 and 1,035.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,620.69 : 2,428.98 = 1,035.46 : x
2. Step 2: Convert to fraction form
   1,620.69/2,428.98 = 1,035.46/x
3. Step 3: Cross multiply
   1,620.69x = 2,428.98 × 1,035.46
4. Step 4: Simplify right side
   1,620.69x = 2,515,106.45
5. Step 5: Solve for x
   x = 2,515,106.45/1,620.69
6. Step 6: Final answer
   x = 1,551.88