Finding the Fourth Proportional to 1,359.86, 2,029.93 and 1,258.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,359.86 : 2,029.93 = 1,258.34 : x
2. Step 2: Convert to fraction form
   1,359.86/2,029.93 = 1,258.34/x
3. Step 3: Cross multiply
   1,359.86x = 2,029.93 × 1,258.34
4. Step 4: Simplify right side
   1,359.86x = 2,554,328.82
5. Step 5: Solve for x
   x = 2,554,328.82/1,359.86
6. Step 6: Final answer
   x = 1,878.38