Finding the Fourth Proportional to 3,380.32, 5,070.28 and 1,071.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,380.32 : 5,070.28 = 1,071.82 : x
2. Step 2: Convert to fraction form
   3,380.32/5,070.28 = 1,071.82/x
3. Step 3: Cross multiply
   3,380.32x = 5,070.28 × 1,071.82
4. Step 4: Simplify right side
   3,380.32x = 5,434,427.51
5. Step 5: Solve for x
   x = 5,434,427.51/3,380.32
6. Step 6: Final answer
   x = 1,607.67