Finding the Fourth Proportional to 1,404.17, 2,106.50 and 479.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.17 : 2,106.50 = 479.51 : x
2. Step 2: Convert to fraction form
   1,404.17/2,106.50 = 479.51/x
3. Step 3: Cross multiply
   1,404.17x = 2,106.50 × 479.51
4. Step 4: Simplify right side
   1,404.17x = 1,010,094.42
5. Step 5: Solve for x
   x = 1,010,094.42/1,404.17
6. Step 6: Final answer
   x = 719.35