Finding the Fourth Proportional to 2,128,779.78, 2,937,266.55 and 1,354,128.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128,779.78 : 2,937,266.55 = 1,354,128.54 : x
2. Step 2: Convert to fraction form
   2,128,779.78/2,937,266.55 = 1,354,128.54/x
3. Step 3: Cross multiply
   2,128,779.78x = 2,937,266.55 × 1,354,128.54
4. Step 4: Simplify right side
   2,128,779.78x = 3,977,436,464,942.34
5. Step 5: Solve for x
   x = 3,977,436,464,942.34/2,128,779.78
6. Step 6: Final answer
   x = 1,868,411.43