Finding the Fourth Proportional to 1,915,442.69, 2,643,279.41 and 1,056,082.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,915,442.69 : 2,643,279.41 = 1,056,082.91 : x
2. Step 2: Convert to fraction form
   1,915,442.69/2,643,279.41 = 1,056,082.91/x
3. Step 3: Cross multiply
   1,915,442.69x = 2,643,279.41 × 1,056,082.91
4. Step 4: Simplify right side
   1,915,442.69x = 2,791,522,200,679.69
5. Step 5: Solve for x
   x = 2,791,522,200,679.69/1,915,442.69
6. Step 6: Final answer
   x = 1,457,377.05