Finding the Fourth Proportional to 1,401.39, 2,100.21 and 1,075.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.39 : 2,100.21 = 1,075.16 : x
2. Step 2: Convert to fraction form
   1,401.39/2,100.21 = 1,075.16/x
3. Step 3: Cross multiply
   1,401.39x = 2,100.21 × 1,075.16
4. Step 4: Simplify right side
   1,401.39x = 2,258,051.28
5. Step 5: Solve for x
   x = 2,258,051.28/1,401.39
6. Step 6: Final answer
   x = 1,611.29