Finding the Fourth Proportional to 1,918,572.47, 2,647,638.47 and 1,059,139.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,918,572.47 : 2,647,638.47 = 1,059,139.79 : x
2. Step 2: Convert to fraction form
   1,918,572.47/2,647,638.47 = 1,059,139.79/x
3. Step 3: Cross multiply
   1,918,572.47x = 2,647,638.47 × 1,059,139.79
4. Step 4: Simplify right side
   1,918,572.47x = 2,804,219,253,111.72
5. Step 5: Solve for x
   x = 2,804,219,253,111.72/1,918,572.47
6. Step 6: Final answer
   x = 1,461,617.58