Finding the Fourth Proportional to 2,167,443.51, 2,991,139.55 and 1,200,663.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,167,443.51 : 2,991,139.55 = 1,200,663.76 : x
2. Step 2: Convert to fraction form
   2,167,443.51/2,991,139.55 = 1,200,663.76/x
3. Step 3: Cross multiply
   2,167,443.51x = 2,991,139.55 × 1,200,663.76
4. Step 4: Simplify right side
   2,167,443.51x = 3,591,352,855,417.42
5. Step 5: Solve for x
   x = 3,591,352,855,417.42/2,167,443.51
6. Step 6: Final answer
   x = 1,656,953.38