Finding the Fourth Proportional to 1,543.74, 2,145.05 and 1,525.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,543.74 : 2,145.05 = 1,525.50 : x
2. Step 2: Convert to fraction form
   1,543.74/2,145.05 = 1,525.50/x
3. Step 3: Cross multiply
   1,543.74x = 2,145.05 × 1,525.50
4. Step 4: Simplify right side
   1,543.74x = 3,272,266.15
5. Step 5: Solve for x
   x = 3,272,266.15/1,543.74
6. Step 6: Final answer
   x = 2,119.70