Finding the Fourth Proportional to 2,535,810.78, 3,499,411.60 and 1,389,887.58

Step by Step Solution

1. Step 1: Write the proportion equation
   2,535,810.78 : 3,499,411.60 = 1,389,887.58 : x
2. Step 2: Convert to fraction form
   2,535,810.78/3,499,411.60 = 1,389,887.58/x
3. Step 3: Cross multiply
   2,535,810.78x = 3,499,411.60 × 1,389,887.58
4. Step 4: Simplify right side
   2,535,810.78x = 4,863,788,720,147.93
5. Step 5: Solve for x
   x = 4,863,788,720,147.93/2,535,810.78
6. Step 6: Final answer
   x = 1,918,040.87