Finding the Fourth Proportional to 3,375.80, 5,061.50 and 1,400.88

Step by Step Solution

1. Step 1: Write the proportion equation
   3,375.80 : 5,061.50 = 1,400.88 : x
2. Step 2: Convert to fraction form
   3,375.80/5,061.50 = 1,400.88/x
3. Step 3: Cross multiply
   3,375.80x = 5,061.50 × 1,400.88
4. Step 4: Simplify right side
   3,375.80x = 7,090,547.12
5. Step 5: Solve for x
   x = 7,090,547.12/3,375.80
6. Step 6: Final answer
   x = 2,100.41