Finding the Fourth Proportional to 1,554.09, 2,145.20 and 1,030.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,554.09 : 2,145.20 = 1,030.29 : x
2. Step 2: Convert to fraction form
   1,554.09/2,145.20 = 1,030.29/x
3. Step 3: Cross multiply
   1,554.09x = 2,145.20 × 1,030.29
4. Step 4: Simplify right side
   1,554.09x = 2,210,172.96
5. Step 5: Solve for x
   x = 2,210,172.96/1,554.09
6. Step 6: Final answer
   x = 1,422.17