Finding the Fourth Proportional to 1,976.56, 2,966.63 and 1,052.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,976.56 : 2,966.63 = 1,052.90 : x
2. Step 2: Convert to fraction form
   1,976.56/2,966.63 = 1,052.90/x
3. Step 3: Cross multiply
   1,976.56x = 2,966.63 × 1,052.90
4. Step 4: Simplify right side
   1,976.56x = 3,123,564.73
5. Step 5: Solve for x
   x = 3,123,564.73/1,976.56
6. Step 6: Final answer
   x = 1,580.30