Finding the Fourth Proportional to 1,869.72, 2,806.32 and 945.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,869.72 : 2,806.32 = 945.93 : x
2. Step 2: Convert to fraction form
   1,869.72/2,806.32 = 945.93/x
3. Step 3: Cross multiply
   1,869.72x = 2,806.32 × 945.93
4. Step 4: Simplify right side
   1,869.72x = 2,654,577.55
5. Step 5: Solve for x
   x = 2,654,577.55/1,869.72
6. Step 6: Final answer
   x = 1,419.77