Finding the Fourth Proportional to 1,009.60, 1,393.41 and 943.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,009.60 : 1,393.41 = 943.72 : x
2. Step 2: Convert to fraction form
   1,009.60/1,393.41 = 943.72/x
3. Step 3: Cross multiply
   1,009.60x = 1,393.41 × 943.72
4. Step 4: Simplify right side
   1,009.60x = 1,314,988.89
5. Step 5: Solve for x
   x = 1,314,988.89/1,009.60
6. Step 6: Final answer
   x = 1,302.49