Finding the Fourth Proportional to 1,375.02, 2,063.56 and 790.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.02 : 2,063.56 = 790.31 : x
2. Step 2: Convert to fraction form
   1,375.02/2,063.56 = 790.31/x
3. Step 3: Cross multiply
   1,375.02x = 2,063.56 × 790.31
4. Step 4: Simplify right side
   1,375.02x = 1,630,852.10
5. Step 5: Solve for x
   x = 1,630,852.10/1,375.02
6. Step 6: Final answer
   x = 1,186.06