Finding the Fourth Proportional to 1,592.46, 2,196.72 and 1,172.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,592.46 : 2,196.72 = 1,172.88 : x
2. Step 2: Convert to fraction form
   1,592.46/2,196.72 = 1,172.88/x
3. Step 3: Cross multiply
   1,592.46x = 2,196.72 × 1,172.88
4. Step 4: Simplify right side
   1,592.46x = 2,576,488.95
5. Step 5: Solve for x
   x = 2,576,488.95/1,592.46
6. Step 6: Final answer
   x = 1,617.93