Finding the Fourth Proportional to 1,521.55, 2,100.90 and 1,337.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521.55 : 2,100.90 = 1,337.23 : x
2. Step 2: Convert to fraction form
   1,521.55/2,100.90 = 1,337.23/x
3. Step 3: Cross multiply
   1,521.55x = 2,100.90 × 1,337.23
4. Step 4: Simplify right side
   1,521.55x = 2,809,386.51
5. Step 5: Solve for x
   x = 2,809,386.51/1,521.55
6. Step 6: Final answer
   x = 1,846.40