Finding the Fourth Proportional to 2,330.79, 3,215.12 and 1,575.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,330.79 : 3,215.12 = 1,575.87 : x
2. Step 2: Convert to fraction form
   2,330.79/3,215.12 = 1,575.87/x
3. Step 3: Cross multiply
   2,330.79x = 3,215.12 × 1,575.87
4. Step 4: Simplify right side
   2,330.79x = 5,066,611.15
5. Step 5: Solve for x
   x = 5,066,611.15/2,330.79
6. Step 6: Final answer
   x = 2,173.77