Finding the Fourth Proportional to 1,886.18, 2,830.38 and 790.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,886.18 : 2,830.38 = 790.46 : x
2. Step 2: Convert to fraction form
   1,886.18/2,830.38 = 790.46/x
3. Step 3: Cross multiply
   1,886.18x = 2,830.38 × 790.46
4. Step 4: Simplify right side
   1,886.18x = 2,237,288.02
5. Step 5: Solve for x
   x = 2,237,288.02/1,886.18
6. Step 6: Final answer
   x = 1,186.15