Finding the Fourth Proportional to 2,142,840.86, 2,956,278.56 and 1,224,577.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142,840.86 : 2,956,278.56 = 1,224,577.37 : x
2. Step 2: Convert to fraction form
   2,142,840.86/2,956,278.56 = 1,224,577.37/x
3. Step 3: Cross multiply
   2,142,840.86x = 2,956,278.56 × 1,224,577.37
4. Step 4: Simplify right side
   2,142,840.86x = 3,620,191,803,087.91
5. Step 5: Solve for x
   x = 3,620,191,803,087.91/2,142,840.86
6. Step 6: Final answer
   x = 1,689,435.68