Finding the Fourth Proportional to 4,900.58, 7,350.29 and 1,390.89

Step by Step Solution

1. Step 1: Write the proportion equation
   4,900.58 : 7,350.29 = 1,390.89 : x
2. Step 2: Convert to fraction form
   4,900.58/7,350.29 = 1,390.89/x
3. Step 3: Cross multiply
   4,900.58x = 7,350.29 × 1,390.89
4. Step 4: Simplify right side
   4,900.58x = 10,223,444.86
5. Step 5: Solve for x
   x = 10,223,444.86/4,900.58
6. Step 6: Final answer
   x = 2,086.17