Finding the Fourth Proportional to 1,554.56, 2,145.52 and 1,030.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,554.56 : 2,145.52 = 1,030.24 : x
2. Step 2: Convert to fraction form
   1,554.56/2,145.52 = 1,030.24/x
3. Step 3: Cross multiply
   1,554.56x = 2,145.52 × 1,030.24
4. Step 4: Simplify right side
   1,554.56x = 2,210,400.52
5. Step 5: Solve for x
   x = 2,210,400.52/1,554.56
6. Step 6: Final answer
   x = 1,421.88