Finding the Fourth Proportional to 1,878.98, 2,593.20 and 1,355.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,878.98 : 2,593.20 = 1,355.34 : x
2. Step 2: Convert to fraction form
   1,878.98/2,593.20 = 1,355.34/x
3. Step 3: Cross multiply
   1,878.98x = 2,593.20 × 1,355.34
4. Step 4: Simplify right side
   1,878.98x = 3,514,667.69
5. Step 5: Solve for x
   x = 3,514,667.69/1,878.98
6. Step 6: Final answer
   x = 1,870.52