Finding the Fourth Proportional to 6,900.30, 10,350.54 and 1,970.10

Step by Step Solution

1. Step 1: Write the proportion equation
   6,900.30 : 10,350.54 = 1,970.10 : x
2. Step 2: Convert to fraction form
   6,900.30/10,350.54 = 1,970.10/x
3. Step 3: Cross multiply
   6,900.30x = 10,350.54 × 1,970.10
4. Step 4: Simplify right side
   6,900.30x = 20,391,598.85
5. Step 5: Solve for x
   x = 20,391,598.85/6,900.30
6. Step 6: Final answer
   x = 2,955.18