Finding the Fourth Proportional to 1,685,111.52, 2,325,454.16 and 921,168.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,685,111.52 : 2,325,454.16 = 921,168.16 : x
2. Step 2: Convert to fraction form
   1,685,111.52/2,325,454.16 = 921,168.16/x
3. Step 3: Cross multiply
   1,685,111.52x = 2,325,454.16 × 921,168.16
4. Step 4: Simplify right side
   1,685,111.52x = 2,142,134,329,731.55
5. Step 5: Solve for x
   x = 2,142,134,329,731.55/1,685,111.52
6. Step 6: Final answer
   x = 1,271,212.20