Finding the Fourth Proportional to 2,158,556.84, 2,978,812.23 and 1,191,688.73

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158,556.84 : 2,978,812.23 = 1,191,688.73 : x
2. Step 2: Convert to fraction form
   2,158,556.84/2,978,812.23 = 1,191,688.73/x
3. Step 3: Cross multiply
   2,158,556.84x = 2,978,812.23 × 1,191,688.73
4. Step 4: Simplify right side
   2,158,556.84x = 3,549,816,963,277.17
5. Step 5: Solve for x
   x = 3,549,816,963,277.17/2,158,556.84
6. Step 6: Final answer
   x = 1,644,532.54