Finding the Fourth Proportional to 1,509.69, 2,084.15 and 1,172.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,509.69 : 2,084.15 = 1,172.84 : x
2. Step 2: Convert to fraction form
   1,509.69/2,084.15 = 1,172.84/x
3. Step 3: Cross multiply
   1,509.69x = 2,084.15 × 1,172.84
4. Step 4: Simplify right side
   1,509.69x = 2,444,369.01
5. Step 5: Solve for x
   x = 2,444,369.01/1,509.69
6. Step 6: Final answer
   x = 1,619.12