Finding the Fourth Proportional to 2,557.03, 3,528.77 and 1,437.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,557.03 : 3,528.77 = 1,437.90 : x
2. Step 2: Convert to fraction form
   2,557.03/3,528.77 = 1,437.90/x
3. Step 3: Cross multiply
   2,557.03x = 3,528.77 × 1,437.90
4. Step 4: Simplify right side
   2,557.03x = 5,074,017.81
5. Step 5: Solve for x
   x = 5,074,017.81/2,557.03
6. Step 6: Final answer
   x = 1,984.34