Finding the Fourth Proportional to 1,384.32, 1,909.11 and 942.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,384.32 : 1,909.11 = 942.81 : x
2. Step 2: Convert to fraction form
   1,384.32/1,909.11 = 942.81/x
3. Step 3: Cross multiply
   1,384.32x = 1,909.11 × 942.81
4. Step 4: Simplify right side
   1,384.32x = 1,799,928.00
5. Step 5: Solve for x
   x = 1,799,928.00/1,384.32
6. Step 6: Final answer
   x = 1,300.23