Finding the Fourth Proportional to 3,380.72, 5,070.12 and 1,300.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,380.72 : 5,070.12 = 1,300.58 : x
2. Step 2: Convert to fraction form
   3,380.72/5,070.12 = 1,300.58/x
3. Step 3: Cross multiply
   3,380.72x = 5,070.12 × 1,300.58
4. Step 4: Simplify right side
   3,380.72x = 6,594,096.67
5. Step 5: Solve for x
   x = 6,594,096.67/3,380.72
6. Step 6: Final answer
   x = 1,950.50