Finding the Fourth Proportional to 1,592.34, 2,196.18 and 1,218.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,592.34 : 2,196.18 = 1,218.39 : x
2. Step 2: Convert to fraction form
   1,592.34/2,196.18 = 1,218.39/x
3. Step 3: Cross multiply
   1,592.34x = 2,196.18 × 1,218.39
4. Step 4: Simplify right side
   1,592.34x = 2,675,803.75
5. Step 5: Solve for x
   x = 2,675,803.75/1,592.34
6. Step 6: Final answer
   x = 1,680.42