Finding the Fourth Proportional to 1,572.96, 2,170.72 and 943.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,572.96 : 2,170.72 = 943.86 : x
2. Step 2: Convert to fraction form
   1,572.96/2,170.72 = 943.86/x
3. Step 3: Cross multiply
   1,572.96x = 2,170.72 × 943.86
4. Step 4: Simplify right side
   1,572.96x = 2,048,855.78
5. Step 5: Solve for x
   x = 2,048,855.78/1,572.96
6. Step 6: Final answer
   x = 1,302.55