Finding the Fourth Proportional to 2,128,238.78, 2,937,031.92 and 1,161,431.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,128,238.78 : 2,937,031.92 = 1,161,431.48 : x
2. Step 2: Convert to fraction form
   2,128,238.78/2,937,031.92 = 1,161,431.48/x
3. Step 3: Cross multiply
   2,128,238.78x = 2,937,031.92 × 1,161,431.48
4. Step 4: Simplify right side
   2,128,238.78x = 3,411,161,336,995.42
5. Step 5: Solve for x
   x = 3,411,161,336,995.42/2,128,238.78
6. Step 6: Final answer
   x = 1,602,809.50