Finding the Fourth Proportional to 2,477,080.47, 3,418,097.72 and 1,389,128.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,477,080.47 : 3,418,097.72 = 1,389,128.16 : x
2. Step 2: Convert to fraction form
   2,477,080.47/3,418,097.72 = 1,389,128.16/x
3. Step 3: Cross multiply
   2,477,080.47x = 3,418,097.72 × 1,389,128.16
4. Step 4: Simplify right side
   2,477,080.47x = 4,748,175,779,393.31
5. Step 5: Solve for x
   x = 4,748,175,779,393.31/2,477,080.47
6. Step 6: Final answer
   x = 1,916,843.58