Finding the Fourth Proportional to 1,059,100.74, 1,587,719.79 and 419,853.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059,100.74 : 1,587,719.79 = 419,853.53 : x
2. Step 2: Convert to fraction form
   1,059,100.74/1,587,719.79 = 419,853.53/x
3. Step 3: Cross multiply
   1,059,100.74x = 1,587,719.79 × 419,853.53
4. Step 4: Simplify right side
   1,059,100.74x = 666,609,750,543.76
5. Step 5: Solve for x
   x = 666,609,750,543.76/1,059,100.74
6. Step 6: Final answer
   x = 629,411.09