Finding the Fourth Proportional to 1,970.52, 2,956.82 and 1,310.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,970.52 : 2,956.82 = 1,310.78 : x
2. Step 2: Convert to fraction form
   1,970.52/2,956.82 = 1,310.78/x
3. Step 3: Cross multiply
   1,970.52x = 2,956.82 × 1,310.78
4. Step 4: Simplify right side
   1,970.52x = 3,875,740.52
5. Step 5: Solve for x
   x = 3,875,740.52/1,970.52
6. Step 6: Final answer
   x = 1,966.86