Finding the Fourth Proportional to 1,395.32, 1,928.10 and 1,001.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,395.32 : 1,928.10 = 1,001.72 : x
2. Step 2: Convert to fraction form
   1,395.32/1,928.10 = 1,001.72/x
3. Step 3: Cross multiply
   1,395.32x = 1,928.10 × 1,001.72
4. Step 4: Simplify right side
   1,395.32x = 1,931,416.33
5. Step 5: Solve for x
   x = 1,931,416.33/1,395.32
6. Step 6: Final answer
   x = 1,384.21