Finding the Fourth Proportional to 1,886.05, 2,830.18 and 790.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,886.05 : 2,830.18 = 790.32 : x
2. Step 2: Convert to fraction form
   1,886.05/2,830.18 = 790.32/x
3. Step 3: Cross multiply
   1,886.05x = 2,830.18 × 790.32
4. Step 4: Simplify right side
   1,886.05x = 2,236,747.86
5. Step 5: Solve for x
   x = 2,236,747.86/1,886.05
6. Step 6: Final answer
   x = 1,185.94