Finding the Fourth Proportional to 1,891.12, 2,612.20 and 1,300.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,891.12 : 2,612.20 = 1,300.62 : x
2. Step 2: Convert to fraction form
   1,891.12/2,612.20 = 1,300.62/x
3. Step 3: Cross multiply
   1,891.12x = 2,612.20 × 1,300.62
4. Step 4: Simplify right side
   1,891.12x = 3,397,479.56
5. Step 5: Solve for x
   x = 3,397,479.56/1,891.12
6. Step 6: Final answer
   x = 1,796.54