Finding the Fourth Proportional to 4,780.50, 7,168.93 and 1,858.42

Step by Step Solution

1. Step 1: Write the proportion equation
   4,780.50 : 7,168.93 = 1,858.42 : x
2. Step 2: Convert to fraction form
   4,780.50/7,168.93 = 1,858.42/x
3. Step 3: Cross multiply
   4,780.50x = 7,168.93 × 1,858.42
4. Step 4: Simplify right side
   4,780.50x = 13,322,882.89
5. Step 5: Solve for x
   x = 13,322,882.89/4,780.50
6. Step 6: Final answer
   x = 2,786.92