Finding the Fourth Proportional to 1,878.76, 2,592.78 and 1,039.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,878.76 : 2,592.78 = 1,039.46 : x
2. Step 2: Convert to fraction form
   1,878.76/2,592.78 = 1,039.46/x
3. Step 3: Cross multiply
   1,878.76x = 2,592.78 × 1,039.46
4. Step 4: Simplify right side
   1,878.76x = 2,695,091.10
5. Step 5: Solve for x
   x = 2,695,091.10/1,878.76
6. Step 6: Final answer
   x = 1,434.51