Finding the Fourth Proportional to 2,145.02, 2,958.53 and 1,436.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.02 : 2,958.53 = 1,436.63 : x
2. Step 2: Convert to fraction form
   2,145.02/2,958.53 = 1,436.63/x
3. Step 3: Cross multiply
   2,145.02x = 2,958.53 × 1,436.63
4. Step 4: Simplify right side
   2,145.02x = 4,250,290.98
5. Step 5: Solve for x
   x = 4,250,290.98/2,145.02
6. Step 6: Final answer
   x = 1,981.47