Finding the Fourth Proportional to 3,438.12, 5,152.56 and 1,875.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,438.12 : 5,152.56 = 1,875.78 : x
2. Step 2: Convert to fraction form
   3,438.12/5,152.56 = 1,875.78/x
3. Step 3: Cross multiply
   3,438.12x = 5,152.56 × 1,875.78
4. Step 4: Simplify right side
   3,438.12x = 9,665,087.01
5. Step 5: Solve for x
   x = 9,665,087.01/3,438.12
6. Step 6: Final answer
   x = 2,811.15