Finding the Fourth Proportional to 3,810.83, 5,716.38 and 1,312

Step by Step Solution

1. Step 1: Write the proportion equation
   3,810.83 : 5,716.38 = 1,312 : x
2. Step 2: Convert to fraction form
   3,810.83/5,716.38 = 1,312/x
3. Step 3: Cross multiply
   3,810.83x = 5,716.38 × 1,312
4. Step 4: Simplify right side
   3,810.83x = 7,499,890.56
5. Step 5: Solve for x
   x = 7,499,890.56/3,810.83
6. Step 6: Final answer
   x = 1,968.05