Finding the Fourth Proportional to 1,931.32, 2,898.04 and 1,053.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,931.32 : 2,898.04 = 1,053.78 : x
2. Step 2: Convert to fraction form
   1,931.32/2,898.04 = 1,053.78/x
3. Step 3: Cross multiply
   1,931.32x = 2,898.04 × 1,053.78
4. Step 4: Simplify right side
   1,931.32x = 3,053,908.78
5. Step 5: Solve for x
   x = 3,053,908.78/1,931.32
6. Step 6: Final answer
   x = 1,581.26