Finding the Fourth Proportional to 1,554.30, 2,143.98 and 1,030.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,554.30 : 2,143.98 = 1,030.32 : x
2. Step 2: Convert to fraction form
   1,554.30/2,143.98 = 1,030.32/x
3. Step 3: Cross multiply
   1,554.30x = 2,143.98 × 1,030.32
4. Step 4: Simplify right side
   1,554.30x = 2,208,985.47
5. Step 5: Solve for x
   x = 2,208,985.47/1,554.30
6. Step 6: Final answer
   x = 1,421.21