Finding the Fourth Proportional to 1,429,915.96, 2,145,169.38 and 419,071.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429,915.96 : 2,145,169.38 = 419,071.06 : x
2. Step 2: Convert to fraction form
   1,429,915.96/2,145,169.38 = 419,071.06/x
3. Step 3: Cross multiply
   1,429,915.96x = 2,145,169.38 × 419,071.06
4. Step 4: Simplify right side
   1,429,915.96x = 898,978,405,956.14
5. Step 5: Solve for x
   x = 898,978,405,956.14/1,429,915.96
6. Step 6: Final answer
   x = 628,693.18