Finding the Fourth Proportional to 1,404.03, 2,106.04 and 430.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.03 : 2,106.04 = 430.01 : x
2. Step 2: Convert to fraction form
   1,404.03/2,106.04 = 430.01/x
3. Step 3: Cross multiply
   1,404.03x = 2,106.04 × 430.01
4. Step 4: Simplify right side
   1,404.03x = 905,607.73
5. Step 5: Solve for x
   x = 905,607.73/1,404.03
6. Step 6: Final answer
   x = 645.01