Finding the Fourth Proportional to 1,928.08, 2,889.72 and 1,003.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,928.08 : 2,889.72 = 1,003.15 : x
2. Step 2: Convert to fraction form
   1,928.08/2,889.72 = 1,003.15/x
3. Step 3: Cross multiply
   1,928.08x = 2,889.72 × 1,003.15
4. Step 4: Simplify right side
   1,928.08x = 2,898,822.62
5. Step 5: Solve for x
   x = 2,898,822.62/1,928.08
6. Step 6: Final answer
   x = 1,503.48