Finding the Fourth Proportional to 2,140,218.78, 2,953,501.20 and 1,173,328.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140,218.78 : 2,953,501.20 = 1,173,328.31 : x
2. Step 2: Convert to fraction form
   2,140,218.78/2,953,501.20 = 1,173,328.31/x
3. Step 3: Cross multiply
   2,140,218.78x = 2,953,501.20 × 1,173,328.31
4. Step 4: Simplify right side
   2,140,218.78x = 3,465,426,556,811.47
5. Step 5: Solve for x
   x = 3,465,426,556,811.47/2,140,218.78
6. Step 6: Final answer
   x = 1,619,192.67