Finding the Fourth Proportional to 1,783.72, 2,671.89 and 1,052.90

Step by Step Solution

1. Step 1: Write the proportion equation
   1,783.72 : 2,671.89 = 1,052.90 : x
2. Step 2: Convert to fraction form
   1,783.72/2,671.89 = 1,052.90/x
3. Step 3: Cross multiply
   1,783.72x = 2,671.89 × 1,052.90
4. Step 4: Simplify right side
   1,783.72x = 2,813,225.69
5. Step 5: Solve for x
   x = 2,813,225.69/1,783.72
6. Step 6: Final answer
   x = 1,577.17