Finding the Fourth Proportional to 2,167,445.51, 2,991,142.31 and 1,200,665.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,167,445.51 : 2,991,142.31 = 1,200,665.76 : x
2. Step 2: Convert to fraction form
   2,167,445.51/2,991,142.31 = 1,200,665.76/x
3. Step 3: Cross multiply
   2,167,445.51x = 2,991,142.31 × 1,200,665.76
4. Step 4: Simplify right side
   2,167,445.51x = 3,591,362,154,904.31
5. Step 5: Solve for x
   x = 3,591,362,154,904.31/2,167,445.51
6. Step 6: Final answer
   x = 1,656,956.14