Finding the Fourth Proportional to 2,145.42, 2,956.10 and 1,554.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,145.42 : 2,956.10 = 1,554.93 : x
2. Step 2: Convert to fraction form
   2,145.42/2,956.10 = 1,554.93/x
3. Step 3: Cross multiply
   2,145.42x = 2,956.10 × 1,554.93
4. Step 4: Simplify right side
   2,145.42x = 4,596,520.80
5. Step 5: Solve for x
   x = 4,596,520.80/2,145.42
6. Step 6: Final answer
   x = 2,142.48