Finding the Fourth Proportional to 1,886.02, 2,829.72 and 790.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,886.02 : 2,829.72 = 790.30 : x
2. Step 2: Convert to fraction form
   1,886.02/2,829.72 = 790.30/x
3. Step 3: Cross multiply
   1,886.02x = 2,829.72 × 790.30
4. Step 4: Simplify right side
   1,886.02x = 2,236,327.72
5. Step 5: Solve for x
   x = 2,236,327.72/1,886.02
6. Step 6: Final answer
   x = 1,185.74