Finding the Fourth Proportional to 1,415.09, 2,113.69 and 1,196.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,415.09 : 2,113.69 = 1,196.39 : x
2. Step 2: Convert to fraction form
   1,415.09/2,113.69 = 1,196.39/x
3. Step 3: Cross multiply
   1,415.09x = 2,113.69 × 1,196.39
4. Step 4: Simplify right side
   1,415.09x = 2,528,797.58
5. Step 5: Solve for x
   x = 2,528,797.58/1,415.09
6. Step 6: Final answer
   x = 1,787.02