Finding the Fourth Proportional to 1,401.81, 2,100.63 and 1,248.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.81 : 2,100.63 = 1,248.03 : x
2. Step 2: Convert to fraction form
   1,401.81/2,100.63 = 1,248.03/x
3. Step 3: Cross multiply
   1,401.81x = 2,100.63 × 1,248.03
4. Step 4: Simplify right side
   1,401.81x = 2,621,649.26
5. Step 5: Solve for x
   x = 2,621,649.26/1,401.81
6. Step 6: Final answer
   x = 1,870.19