Finding the Fourth Proportional to 1,436.40, 2,153.52 and 1,146.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,436.40 : 2,153.52 = 1,146.96 : x
2. Step 2: Convert to fraction form
   1,436.40/2,153.52 = 1,146.96/x
3. Step 3: Cross multiply
   1,436.40x = 2,153.52 × 1,146.96
4. Step 4: Simplify right side
   1,436.40x = 2,470,001.30
5. Step 5: Solve for x
   x = 2,470,001.30/1,436.40
6. Step 6: Final answer
   x = 1,719.58