Finding the Fourth Proportional to 1,942.45, 2,915.16 and 1,423.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,942.45 : 2,915.16 = 1,423.81 : x
2. Step 2: Convert to fraction form
   1,942.45/2,915.16 = 1,423.81/x
3. Step 3: Cross multiply
   1,942.45x = 2,915.16 × 1,423.81
4. Step 4: Simplify right side
   1,942.45x = 4,150,633.96
5. Step 5: Solve for x
   x = 4,150,633.96/1,942.45
6. Step 6: Final answer
   x = 2,136.80