Finding the Fourth Proportional to 1,525.88, 2,100.39 and 1,316.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,525.88 : 2,100.39 = 1,316.72 : x
2. Step 2: Convert to fraction form
   1,525.88/2,100.39 = 1,316.72/x
3. Step 3: Cross multiply
   1,525.88x = 2,100.39 × 1,316.72
4. Step 4: Simplify right side
   1,525.88x = 2,765,625.52
5. Step 5: Solve for x
   x = 2,765,625.52/1,525.88
6. Step 6: Final answer
   x = 1,812.48