Finding the Fourth Proportional to 2,116,874.56, 2,921,342.88 and 1,211,748.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116,874.56 : 2,921,342.88 = 1,211,748.16 : x
2. Step 2: Convert to fraction form
   2,116,874.56/2,921,342.88 = 1,211,748.16/x
3. Step 3: Cross multiply
   2,116,874.56x = 2,921,342.88 × 1,211,748.16
4. Step 4: Simplify right side
   2,116,874.56x = 3,539,931,859,569.10
5. Step 5: Solve for x
   x = 3,539,931,859,569.10/2,116,874.56
6. Step 6: Final answer
   x = 1,672,244.51