Finding the Fourth Proportional to 1,406.71, 2,109.62 and 1,015.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.71 : 2,109.62 = 1,015.48 : x
2. Step 2: Convert to fraction form
   1,406.71/2,109.62 = 1,015.48/x
3. Step 3: Cross multiply
   1,406.71x = 2,109.62 × 1,015.48
4. Step 4: Simplify right side
   1,406.71x = 2,142,274.18
5. Step 5: Solve for x
   x = 2,142,274.18/1,406.71
6. Step 6: Final answer
   x = 1,522.90