Finding the Fourth Proportional to 1,090,820.43, 1,636,342.61 and 417,468.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,090,820.43 : 1,636,342.61 = 417,468.15 : x
2. Step 2: Convert to fraction form
   1,090,820.43/1,636,342.61 = 417,468.15/x
3. Step 3: Cross multiply
   1,090,820.43x = 1,636,342.61 × 417,468.15
4. Step 4: Simplify right side
   1,090,820.43x = 683,120,920,075.53
5. Step 5: Solve for x
   x = 683,120,920,075.53/1,090,820.43
6. Step 6: Final answer
   x = 626,245.07