Finding the Fourth Proportional to 1,918.50, 2,875.32 and 1,053.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,918.50 : 2,875.32 = 1,053.42 : x
2. Step 2: Convert to fraction form
   1,918.50/2,875.32 = 1,053.42/x
3. Step 3: Cross multiply
   1,918.50x = 2,875.32 × 1,053.42
4. Step 4: Simplify right side
   1,918.50x = 3,028,919.59
5. Step 5: Solve for x
   x = 3,028,919.59/1,918.50
6. Step 6: Final answer
   x = 1,578.80