Finding the Fourth Proportional to 1,928.30, 2,889.90 and 1,051.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,928.30 : 2,889.90 = 1,051.18 : x
2. Step 2: Convert to fraction form
   1,928.30/2,889.90 = 1,051.18/x
3. Step 3: Cross multiply
   1,928.30x = 2,889.90 × 1,051.18
4. Step 4: Simplify right side
   1,928.30x = 3,037,797.86
5. Step 5: Solve for x
   x = 3,037,797.86/1,928.30
6. Step 6: Final answer
   x = 1,575.38